MASS LIMITS FOR NEUTRAL HIGGS BOSONS IN EXTENDED HIGGS MODELS

This Section covers models which do not fit into either the Standard Model or its simplest minimal Supersymmetric extension (MSSM), leading to anomalous production rates, or nonstandard final states and branching ratios. In particular, this Section covers limits which may apply to generic two-Higgs-doublet models (2HDM), or to special regions of the MSSM parameter space where decays to invisible particles or to photon pairs are dominant (see the review on “Status of Higgs Boson Physics''). Concerning the mass limits for ${{\mathit H}^{0}}$ and ${{\mathit A}^{0}}$ listed below, see the footnotes or the comment lines for details on the nature of the models to which the limits apply.
The observed signal at about 125 GeV, see section “${{\mathit H}}$'', can be interpreted as one of the neutral Higgs bosons of an extended Higgs sector.

Other Mass Limits

INSPIRE   JSON PDGID:
S055H2O
We use a symbol ${{\mathit H}_{{{1}}}^{0}}$ if mass $<$ 125 GeV or ${{\mathit H}_{{{2}}}^{0}}$ if mass $>$ 125 GeV. The notation ${{\mathit H}}$ is reserved for the 125 GeV particle.

VALUE (GeV) CL% DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
1
AAD
2025AL
 
ATLS ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$
2
AAD
2025AN
 
ATLS ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
3
AAD
2025AU
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
4
AAD
2025AW
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
5
AAD
2025AW
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}_{{{1}}}^{0}}{{\mathit A}_{{{2}}}^{0}}$
6
AAD
2025AY
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$
7
AAD
2025F
 
ATLS ${{\mathit H}}{}^{0}_{1/2}$ $\rightarrow$ ${{\mathit Z}^{\,'}}{{\mathit Z}^{\,'}}$, ${{\mathit Z}^{\,'}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$
8
AAD
2025J
 
ATLS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
9
AAD
2025O
 
ATLS ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
10
AAD
2025X
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
11
ADAN
2025
 
${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
12
CHEKHOVSKY
2025C
 
CMS ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
13
CHEKHOVSKY
2025D
 
CMS ${{\mathit H}}{}^{0}_{1/2}/{{\mathit A}^{0}}$ $\rightarrow$ invisible
14
CHEKHOVSKY
2025I
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
15
CHEKHOVSKY
2025J
 
CMS ${{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$
16
CORTINA-GIL
2025B
 
NA62 ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit H}_{{{1}}}^{0}}$
17
HAYRAPETYAN
2025A
 
CMS ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
18
HAYRAPETYAN
2025AP
 
CMS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}_{{{1/2}}}^{0}}$
19
HAYRAPETYAN
2025C
 
CMS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$
20
HAYRAPETYAN
2025I
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit t}}{{\overline{\mathit t}}}$
21
HAYRAPETYAN
2025P
 
CMS ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ invisible
22
AAD
2024A
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
23
AAD
2024AP
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit t}}{{\overline{\mathit t}}}$
24
AAD
2024BQ
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
25
AAD
2024BV
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
26
AAD
2024BW
 
ATLS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}}$
27
AAD
2024BX
 
ATLS ${{\mathit H}_{{{4}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}_{{{3}}}^{0}}$
28
AAD
2024BX
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{2}}}^{0}}{{\mathit Z}}$
29
AAD
2024CA
 
ATLS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{{1,2}}}}^{0}}{{\mathit H}}$
30
AAD
2024CD
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}}$
31
AAD
2024CF
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$
32
AAD
2024CI
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ invisible
33
AAD
2024CK
 
ATLS two doublet + pseudoscalar + Dirac DM
34
AAD
2024H
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
35
AAD
2024K
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$
36
ADACHI
2024F
 
BEL2 ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
37
HAYRAPETYAN
2024AA
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
38
HAYRAPETYAN
2024AE
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
39
HAYRAPETYAN
2024AF
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
40
HAYRAPETYAN
2024AI
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$, long-lived
41
HAYRAPETYAN
2024AJ
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
42
HAYRAPETYAN
2024AZ
 
CMS ${{\mathit A}^{0}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
43
HAYRAPETYAN
2024AZ
 
CMS ${{\mathit H}}$, ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
44
HAYRAPETYAN
2024I
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$
45
TUMASYAN
2024A
 
CMS ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$, ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$
46
TUMASYAN
2024B
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
47
TUMASYAN
2024B
 
CMS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{{1,2}}}}^{0}}{{\mathit H}}$
48
AAD
2023AD
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
49
AAD
2023AD
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}{{\mathit H}}$
50
AAD
2023AJ
 
ATLS ${{\mathit H}^{\pm}}$ $\rightarrow$ ${{\mathit W}^{\pm}}{{\mathit A}^{0}}$
51
AAD
2023BD
 
ATLS ${{\mathit t}}$ $\rightarrow$ ${{\mathit q}}{{\mathit H}_{{{{1,2}}}}^{0}}$
52
AAD
2023BE
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$
53
AAD
2023BG
 
ATLS ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$
54
AAD
2023BW
 
ATLS ${{\mathit A}^{0}}{{\mathit t}}{{\overline{\mathit t}}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
55
AAD
2023BX
 
ATLS ${{\mathit H}}$ + invisible ${{\mathit A}^{0}}$
56
AAD
2023CA
 
ATLS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}}$
57
AAD
2023CR
 
ATLS flavor changing ${{\mathit H}_{{{2}}}^{0}}$
58
AAD
2023O
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
59
AAD
2023R
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
60
AAD
2023U
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
61
AAD
2023Z
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
62
HAYRAPETYAN
2023C
 
CMS ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit e}}{{\mathit \mu}}$
63
HAYRAPETYAN
2023G
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
64
TUMASYAN
2023
 
CMS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{{1,2}}}}^{0}}{{\mathit H}}$
65
TUMASYAN
2023M
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
66
TUMASYAN
2023O
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
67
TUMASYAN
2023S
 
CMS ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$
68
AAD
2022A
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
69
AAD
2022D
 
ATLS ${{\mathit Z}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ invisible
70
AAD
2022F
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
71
AAD
2022I
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}_{{{2}}}^{0}}{{\widetilde{\mathit \chi}}_{{{1}}}^{0}}$ , ${{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\widetilde{\mathit \chi}}_{{{1}}}^{0}}$ , ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
72
AAD
2022J
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$
73
AAD
2022J
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ , ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$
74
AAD
2022P
 
ATLS ${{\mathit H}_{{{1}}}^{0}}$ , ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ invisible
75
AAD
2022Y
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
76
ABRATENKO
2022A
 
MCBN ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit \pi}^{+}}$
77
TUMASYAN
2022AK
 
CMS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$
78
TUMASYAN
2022D
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$
79
AAD
2021AF
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$
80
AAD
2021AI
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$
81
AAD
2021AY
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
82
AAD
2021AZ
 
ATLS ${{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$
83
AAD
2021BB
 
ATLS ${{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$
84
AAD
2021BE
 
ATLS ${{\mathit A}_{{{1}}}^{0}}$ $\rightarrow$ invisible
85
ABRATENKO
2021
 
MCBN ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit \pi}^{+}}$
86
SIRUNYAN
2021A
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ invisible
87
TUMASYAN
2021F
 
CMS ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}_{{{1,2}}}^{0}}$
88
AAD
2020AA
 
ATLS ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$
89
AAD
2020AI
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
90
AAD
2020AO
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
91
AAD
2020C
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
92
AAD
2020L
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
93
AAD
2020X
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
94
AAIJ
2020AL
 
LHCB ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
95
SIRUNYAN
2020
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
96
SIRUNYAN
2020AA
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$ or ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$
97
SIRUNYAN
2020AC
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
98
SIRUNYAN
2020AD
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \tau}}$ , ${{\mathit e}}{{\mathit \tau}}$
99
SIRUNYAN
2020AF
 
CMS ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit t}}{{\overline{\mathit t}}}$
100
SIRUNYAN
2020AP
 
CMS ${{\mathit H}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
101
SIRUNYAN
2020Y
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$
102
SIRUNYAN
2020Z
 
CMS ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}_{{{{1,2}}}}^{0}}$ or ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit A}^{0}}$, ${{\mathit H}_{{{{1,2}}}}^{0}}$/ ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$, ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
103
AABOUD
2019A
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
104
AABOUD
2019AG
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
105
AABOUD
2019O
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
106
AABOUD
2019T
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
107
AABOUD
2019V
 
ATLS two doublet + pseudoscalar model
108
AABOUD
2019Y
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
109
AALTONEN
2019
 
CDF ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
110
SIRUNYAN
2019
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
111
SIRUNYAN
2019AE
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$
112
SIRUNYAN
2019AN
 
CMS ${{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$
113
SIRUNYAN
2019AV
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
114
SIRUNYAN
2019B
 
CMS ${{\mathit H}_{{{1,2}}}^{0}}$ $/$ ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
115
SIRUNYAN
2019BB
 
CMS ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
116
SIRUNYAN
2019BD
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
117
SIRUNYAN
2019BE
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
118
SIRUNYAN
2019BQ
 
CMS ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
119
SIRUNYAN
2019CR
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $/$ ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
120
SIRUNYAN
2019H
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
121
AABOUD
2018AA
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
122
AABOUD
2018AG
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
123
AABOUD
2018AH
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$
124
AABOUD
2018AI
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
125
AABOUD
2018BF
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$
126
AABOUD
2018BU
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
127
AABOUD
2018BX
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
128
AABOUD
2018CQ
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
129
AABOUD
2018F
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$, ${{\mathit Z}}{{\mathit Z}}$
130
AAIJ
2018AM
 
LHCB ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \tau}}$
131
AAIJ
2018AQ
 
LHCB ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
132
AAIJ
2018AQ
 
LHCB ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
133
SIRUNYAN
2018AF
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
134
SIRUNYAN
2018BA
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$
135
SIRUNYAN
2018CW
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
136
SIRUNYAN
2018DK
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
137
SIRUNYAN
2018DT
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
138
SIRUNYAN
2018DU
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
139
SIRUNYAN
2018ED
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
140
SIRUNYAN
2018EE
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
141
SIRUNYAN
2018F
 
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
142
AABOUD
2017
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
143
AABOUD
2017AP
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
144
AABOUD
2017AW
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
145
KHACHATRYAN
2017AZ
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
146
KHACHATRYAN
2017D
 
CMS ${{\mathit p}}{{\mathit p}}$, 8, 13 TeV, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
147
KHACHATRYAN
2017R
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
148
SIRUNYAN
2017CN
 
CMS ${{\mathit p}}{{\mathit p}}$, 8 TeV, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
149
SIRUNYAN
2017Y
 
CMS ${{\mathit p}}{{\mathit p}}$, 8, 13 TeV, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$
150
AABOUD
2016AB
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
151
AABOUD
2016AE
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$, ${{\mathit Z}}{{\mathit Z}}$
152
AABOUD
2016H
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
153
AABOUD
2016I
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
154
AAD
2016AX
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$
155
AAD
2016C
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$
156
AAD
2016L
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
157
AAD
2016L
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
158
AALTONEN
2016C
 
CDF ${{\mathit H}_{{{1}}}^{0}}$ ${{\mathit H}^{\pm}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}{{\mathit W}^{*}}$, ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
159
KHACHATRYAN
2016BG
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
160
KHACHATRYAN
2016BQ
 
CMS ${{\mathit p}}{{\mathit p}}$, 8 TeV, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
161
KHACHATRYAN
2016F
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}}{{\mathit H}_{{{1}}}}$
162
KHACHATRYAN
2016M
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
163
KHACHATRYAN
2016P
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
164
KHACHATRYAN
2016P
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
165
AAD
2015BK
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
166
AAD
2015BZ
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
167
AAD
2015BZ
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
168
AAD
2015CE
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
169
AAD
2015H
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
170
AAD
2015S
 
ATLS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
171
KHACHATRYAN
2015AW
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$, ${{\mathit Z}}{{\mathit Z}}$
172
KHACHATRYAN
2015BB
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
173
KHACHATRYAN
2015N
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
174
KHACHATRYAN
2015O
 
CMS ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$
175
KHACHATRYAN
2015R
 
CMS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$
176
AAD
2014AP
 
ATLS ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
177
AAD
2014M
 
ATLS ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}^{\pm}}{{\mathit W}^{\mp}}$ $\rightarrow$ ${{\mathit H}}{{\mathit W}^{\pm}}{{\mathit W}^{\mp}}$, ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$
178
CHATRCHYAN
2014G
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit W}}{{\mathit W}^{(*)}}$
179
KHACHATRYAN
2014P
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
180
AALTONEN
2013P
 
CDF ${{\mathit H}^{'0}}$ $\rightarrow$ ${{\mathit H}^{\pm}}{{\mathit W}^{\mp}}$ $\rightarrow$ ${{\mathit H}}{{\mathit W}^{+}}{{\mathit W}^{-}}$
181
CHATRCHYAN
2013BJ
 
CMS ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
182
AALTONEN
2011P
 
CDF ${{\mathit t}}$ $\rightarrow$ ${{\mathit b}}{{\mathit H}^{+}}$, ${{\mathit H}^{+}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit A}^{0}}$
183
ABBIENDI
2010
 
OPAL ${{\mathit H}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}_{{{1}}}^{0}}{{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$
184
SCHAEL
2010
 
ALEP ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
185
ABAZOV
2009V
 
D0 ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
$\text{none 3 - 63}$ 95 186
ABBIENDI
2005A
 
OPAL ${{\mathit A}^{0}}$, Type II model
$>104$ 95 187
ABBIENDI
2004K
 
OPAL ${{\mathit H}}$ $\rightarrow$ 2 jets
188
ABDALLAH
2004
 
DLPH ${{\mathit H}}{{\mathit V}}{{\mathit V}}$ couplings
$>110.3$ 95 189
ACHARD
2004B
 
L3 ${{\mathit H}}$ $\rightarrow$ 2 jets
190
ACHARD
2004F
 
L3 Anomalous coupling
191
ABBIENDI
2003F
 
OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit Z}}$, ${{\mathit H}}$ $\rightarrow$ any
192
ABBIENDI
2003G
 
OPAL ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$
$>105.4$ 95 193, 194
HEISTER
2002L
 
ALEP ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
$>109.1$ 95 195
HEISTER
2002M
 
ALEP ${{\mathit H}}$ $\rightarrow$ 2 jets or ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$
$\text{none 12 - 56}$ 95 196
ABBIENDI
2001E
 
OPAL ${{\mathit A}^{0}}$, Type-II model
197
ACCIARRI
2000R
 
L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit \gamma}}$ and/or ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$
198
ACCIARRI
2000R
 
L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit H}}$
199
GONZALEZ-GARC..
1998B
 
RVUE Anomalous coupling
200
KRAWCZYK
1997
 
RVUE ($\mathit g-2)_{{{\mathit \mu}}}$
201
ALEXANDER
1996H
 
OPAL ${{\mathit Z}}$ $\rightarrow$ ${{\mathit H}}{{\mathit \gamma}}$
1  AAD 2025AL search for production of ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ in association with a ${{\mathit t}}{{\overline{\mathit t}}}$ pair, decaying to ${{\mathit t}}{{\overline{\mathit t}}}$, resulting in final states with one lepton or two opposite-sign leptons, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ and/or ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.4 - 1.0$ TeV. Combined limits with AAD 2023BG are shown in Fig. 10.
2  AAD 2025AN search for production of ${{\mathit A}^{0}}$ in association with a ${{\mathit t}}{{\overline{\mathit t}}}$ pair, in the decay ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $12 - 100$ GeV. If the top Yukawa coupling is as strong as the one of the Standard Model Higgs and B(${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$) = 1, the whole mass range is excluded at 95$\%$CL.
3  AAD 2025AU search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, each tau pair decaying to hadrons + muon final states, in 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on the product of production cross section (normalized to the SM) and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $4 - 15$ GeV, and Fig. 5 for the interpretation in terms of a model with two Higgs doublets plus a singlet.
4  AAD 2025AW search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in associated ${{\mathit Z}}{{\mathit H}}$ production using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 14 for limits on the product of production cross section (normalized to the SM) and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $12 - 60$ GeV.
5  AAD 2025AW search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}_{{{1}}}^{0}}{{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ and ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}_{{{1}}}^{0}}{{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}_{{{1}}}^{0}}{{\mathit A}_{{{1}}}^{0}}{{\mathit A}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in associated ${{\mathit Z}}{{\mathit H}}$ production using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 15 for limits on the product of production cross section (normalized to the SM) and branching ratios for several combinations of ${\mathit m}_{{{\mathit A}_{{{1}}}^{0}}}$ and ${\mathit m}_{{{\mathit A}_{{{2}}}^{0}}}$.
6  AAD 2025AY search for ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$ with hadronically decaying ${{\mathit H}_{{{1}}}^{0}}$ having a long lifetime resulting in displaced vertex, using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The case the parent particle has a different mass ${{\mathit H}_{{{2/3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$) are also examined. See their Figs. 12 and 13 for limits with decay length in the range $0.01 - 1000$ m.
7  AAD 2025F search for ${{\mathit H}}{}^{0}_{1/2}$ $\rightarrow$ ${{\mathit Z}^{\,'}}{{\mathit Z}^{\,'}}$ with ${{\mathit Z}^{\,'}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $40 - 115$ GeV, ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $130 - 800$ GeV, and ${\mathit m}_{{{\mathit Z}^{\,'}}}$ = $15 - 300$ GeV.
8  AAD 2025J search for production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ in the ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ final state, using 126 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 7 and 8 for limits on production cross section times branching ratios in the ranges ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $325 - 1500$ GeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $250 - 1000$ GeV.
9  AAD 2025O search for ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ in 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 6(b), 8(b) and 9(b) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $66 - 110$ GeV. Fig. 9(b) assumes Standard Model Higgs-like properties.
10  AAD 2025X search for the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5(b) for limits on the product of branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $10 - 60$ GeV, assuming SM-like production.
11  ADAN 2025 searches for ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit c}}{{\overline{\mathit c}}}$ using publicly available CMS data of 16.4 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See his Fig. 7 for limits on the product of production cross section (normalized to the SM) and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $4 - 11$ GeV, and Fig. 8 for the interpretation in terms of a model with two Higgs doublets plus a singlet.
12  CHEKHOVSKY 2025C search for ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ by ${{\mathit b}}$-associated prodution using $36.7 - 126.9$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $11 - 14$ for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$, ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.125 - 1.8$ TeV.
13  CHEKHOVSKY 2025D search for invisibly decaying ${{\mathit H}_{{{1}}}^{0}}/{{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ produced in association with ${{\mathit t}}$ or ${{\mathit t}}{{\overline{\mathit t}}}$, using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on cross section times branching ratio for masses between 50 and 500 GeV.
14  CHEKHOVSKY 2025I search for production of an ${{\mathit A}^{0}}$ in gluon-gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$, decaying to ${{\mathit Z}}{{\mathit H}}$ in the final states ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, assuming B(${{\mathit H}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$) of the SM, using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.225 - 1.0$ TeV for the two production mechanisms, and Figs. 5, 6 for constraints on the combination of the two production mechanisms.
15  CHEKHOVSKY 2025J search for ${{\mathit A}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$, ${{\mathit A}_{{{1}}}^{0}}$ escaping detection, using 101 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. In the framework of two Higgs doublet plus a singlet model, limits on signal strengths are given in their Figs. 3 and 4 with varying model parameters.
16  CORTINA-GIL 2025B search for the decay ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit H}_{{{1}}}^{0}}$, with ${{\mathit H}_{{{1}}}^{0}}$ escaping detection or decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$. See their Figs. 2, 3, and 6 for limits on the product of branching ratios for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $0 - 0.33$ GeV, and Fig. 9 for limits on the mixing with the Standard Model Higgs boson.
17  HAYRAPETYAN 2025A search for the decay ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ in 132 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $70 - 110$ GeV.
18  HAYRAPETYAN 2025AP search for ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}_{{{1/2}}}^{0}}$ with decays ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ and ${{\mathit H}_{{{1/2}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ using 132 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 5 and 6 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.24 - 1.0$ TeV and ${\mathit m}_{{{\mathit H}_{{{1/2}}}^{0}}}$ = $0.07 - 0.8$ TeV.
19  HAYRAPETYAN 2025C search for production of ${{\mathit H}_{{{3}}}^{0}}$ in the decay chain ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$, ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.3 - 3$ TeV, ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}/{\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.005 - 0.025$.
20  HAYRAPETYAN 2025I search for ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$ with ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit t}}{{\overline{\mathit t}}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.45 - 2.1$ TeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.35 - 2.0$ TeV.
21  HAYRAPETYAN 2025P search for ${{\mathit A}^{0}}$ decaying to invisible final states, produced in association with a ${{\mathit b}}{{\overline{\mathit b}}}$ pair, using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $50 - 500$ GeV and Fig. 8 for excluded parameter space, both in the two-Higgs-doublet plus singlet pseudoscalar model.
22  AAD 2024A search for the decay ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$ with ${{\mathit Z}}$ decaying to ${{\mathit e}^{+}}{{\mathit e}^{-}}$ or ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.22 - 3.4$ TeV.
23  AAD 2024AP search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ or ${{\mathit A}^{0}}$ decaying to ${{\mathit t}}{{\overline{\mathit t}}}$ in 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 15 and 16 for limits on the Yukawa coupling for ${\mathit m}_{{{\mathit A}^{0}}}$, ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.4 - 1.4$ TeV for different assumptions on width over mass.
24  AAD 2024BQ search for the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, produced by gluon fusion, vector boson fusion, or in association with a weak vector boson, in 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10 for limits on the product of branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $12 - 60$ GeV.
25  AAD 2024BV search for ${{\mathit H}_{{{2}}}^{0}}$ produced by vector-boson fusion, decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$, using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for limits on the product of production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $1 - 5$ TeV.
26  AAD 2024BW search for production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ or ${{\mathit Z}}{{\mathit Z}}$, and ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $6 - 8$ for limits on production cross section times branching ratios in the ranges ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.3 - 1.0$ TeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.17 - 0.5$ TeV.
27  AAD 2024BX search for production of ${{\mathit H}_{{{4}}}^{0}}$ decaying to ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}_{{{3}}}^{0}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ invisible, and ${{\mathit H}_{{{3}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$ $\rightarrow$ 4 ${{\mathit \ell}}$, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 (a), (b) for limits on production cross section times branching ratios in the ranges ${\mathit m}_{{{\mathit H}_{{{4}}}^{0}}}$ = $0.39 - 1.3$ TeV, ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.22 - 1.0$ TeV, and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = 160 GeV.
28  AAD 2024BX search for production of ${{\mathit A}^{0}}$ decaying to ${{\mathit H}_{{{2}}}^{0}}{{\mathit Z}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$, resulting in 4 ${{\mathit \ell}}$ final states, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 (c), (d) for limits on production cross section times branching ratios in the ranges ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.32 - 1.3$ TeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.22 - 1.0$ TeV.
29  AAD 2024CA search for production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{{1,2}}}}^{0}}{{\mathit H}}$, ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$, and ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on production cross section times branching ratios in the ranges ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.17 - 1.0$ TeV and ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $0.015 - 0.5$ TeV.
30  AAD 2024CD search for production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit Z}}{{\mathit A}}$, ${{\mathit A}}$ $\rightarrow$ invisible, using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $8 - 12$ for excluded parameter regions in two-Higgs-doublet plus singlet pseudoscalar model.
31  AAD 2024CF search for gluon-fusion production of ${{\mathit A}^{0}}$ decaying to ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratio in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 90$ GeV, and Fig. 8 for ${{\mathit A}^{0}}$ coupling with the top quark.
32  AAD 2024CI search for production of ${{\mathit H}_{{{2}}}^{0}}$, ${{\mathit A}^{0}}$ decaying to invisible final states, in various channels including ${{\mathit t}}{{\overline{\mathit t}}}$ + missing $\mathit E_{T}$ and ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit t}}{{\overline{\mathit t}}}$, using up to 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 for cross section limits in a simplified model with fixed Dark Matter mass and couplings to quarks and Dark Matter.
33  AAD 2024CK combines published ATLAS data up to 139 fb${}^{-1}$ to constrain two-Higgs-doublet plus singlet pseudoscalar model with ${{\mathit A}_{{{1}}}^{0}}$ decaying to invisibly into Dirac Dark Matter final states. See their Figs. $4 - 9$ for excluded parameter regions.
34  AAD 2024H combine searches for a scalar resonance decaying to ${{\mathit H}}{{\mathit H}}$ using up to 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV from AAD 2022F, AAD 2023Z, and AAD 2022Y. See their Fig. 1 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.251 - 5.0$ TeV.
35  AAD 2024K search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$ with ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ and ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. Merged ${{\mathit \gamma}}{{\mathit \gamma}}$ events as well as resolved ones are looked for. See their Fig. 3 for limits on the product of the branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.1 - 33$ GeV.
36  ADACHI 2024F search for ${{\mathit H}_{{{1}}}^{0}}$, which couples preferentially to muon pairs, in the process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ using 178 fb${}^{-1}$ of ${{\mathit e}^{+}}{{\mathit e}^{-}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 10.58 GeV. See their Fig. 13 (lower) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $0.212 - 9.0$ GeV. Limits on the model parameter are given in Fig. 14 (lower).
37  HAYRAPETYAN 2024AA search for the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$, produced in association with ${{\mathit W}^{\pm}}$ or ${{\mathit Z}}$, in 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 for limits on the product of branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 60$ GeV.
38  HAYRAPETYAN 2024AE search for ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ in the final state ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit W}^{+}}{{\mathit W}^{-}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 19 (upper) for limit on the product of production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.25 - 0.9$ TeV.
39  HAYRAPETYAN 2024AF search for ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ in the final state ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ and ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 10, 11, and 12 for limits on the product of branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $12 - 60$ GeV. Interpretation of the limits in terms of two Higgs doublet plus singlet models is given in their Figs. 13 and 14.
40  HAYRAPETYAN 2024AI search for ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$, with long-lived ${{\mathit H}_{{{1}}}^{0}}$ decaying in the muon detectors to ${{\mathit \gamma}}{{\mathit \gamma}}$, ${{\mathit e}^{+}}{{\mathit e}^{-}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$, ${{\mathit K}^{+}}{{\mathit K}^{-}}$, ${{\mathit K}^{0}}{{\mathit K}^{0}}$, ${{\mathit d}}{{\overline{\mathit d}}}$, ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, or ${{\mathit b}}{{\overline{\mathit b}}}$, using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $13 - 17$ for limits on B(${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$) in the mass range between 0.4 and 55 GeV for each of the decay modes.
41  HAYRAPETYAN 2024AJ search for production of a scalar resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 (right) for limits on production cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.6 - 5.0$ TeV, and Fig. 4 (lower) for their dependence on the width.
42  HAYRAPETYAN 2024AZ search for pair production of ${{\mathit A}^{0}}$ decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ using $101 - 137$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.21 - 60$ GeV.
43  HAYRAPETYAN 2024AZ search for ${{\mathit H}}$ or ${{\mathit H}_{{{{1,2}}}}^{0}}$ decaying to ${{\mathit A}^{0}}$ ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ using $101 - 137$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.5 - 2.7$ GeV and several choices of ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ in a NMSSM scenario.
44  HAYRAPETYAN 2024I search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$ with ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ and ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ in 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on the product of cross section times the branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $1 - 30$ GeV.
45  TUMASYAN 2024A search for production of ${{\mathit H}_{{{{1,2}}}}^{0}}$ in association with ${{\mathit W}}$, ${{\mathit Z}}$, or ${{\mathit t}}{{\overline{\mathit t}}}$, decaying to ${{\mathit e}^{+}}{{\mathit e}^{-}}$, ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, or ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 13 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $15 - 350$ GeV. See also Figs. 16 and 17 for limits on the mixing with the Standard Model Higgs boson.
46  TUMASYAN 2024B search for ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ in the final state ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit b}}{{\overline{\mathit b}}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 (upper) for limit on the product of production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.26 - 1.0$ TeV.
47  TUMASYAN 2024B search for production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{{1,2}}}}^{0}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \gamma}}{{\mathit \gamma}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.3 - 1.0$ TeV and ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $0.09 - 0.8$ TeV.
48  AAD 2023AD search for associated production of ${{\mathit W}}/{{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$ with the decay chain ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 1000$ GeV.
49  AAD 2023AD search for gluon fusion production of ${{\mathit A}^{0}}$ with the decay chain ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $350 - 800$ GeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 400$ GeV.
50  AAD 2023AJ search for production of ${{\mathit H}^{\pm}}$ in association with a top quark, followed by ${{\mathit H}^{\pm}}$ $\rightarrow$ ${{\mathit W}^{\pm}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ invisible, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10 for excluded parameter regions of 2HDM + $\mathit CP$-odd singlet model.
51  AAD 2023BD search for a top quark decaying to ${{\mathit q}}{{\mathit H}_{{{{1,2}}}}^{0}}$ (${{\mathit q}}$ = ${{\mathit u}}$, ${{\mathit c}}$), ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $20 - 160$ GeV.
52  AAD 2023BE search for associated production of ${{\mathit H}_{{{2}}}^{0}}{{\mathit W}}$ and decay ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ assuming the presence of higher dimensional ${{\mathit H}_{{{2}}}^{0}}{{\mathit W}^{+}}{{\mathit W}^{-}}$ interactions, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 for excluded parameter region of higher dimensional operators, and Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.3 - 1.5$ TeV.
53  AAD 2023BG search for production of ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ in association with a ${{\mathit t}}{{\overline{\mathit t}}}$ pair, decaying to ${{\mathit t}}{{\overline{\mathit t}}}$, resulting in final states with two same-sign leptons or three or more leptons, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 (corrected version in the erratum) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ and/or ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.4 - 1.0$ TeV.
54  AAD 2023BW search for ${{\mathit A}^{0}}$ production in association with a ${{\mathit t}}{{\overline{\mathit t}}}$ pair, decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5(a) for limits on production cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 72$ GeV.
55  AAD 2023BX search for production of ${{\mathit H}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ with missing transverse momentum using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for interpretation of the data in terms of 2HDM + a model.
56  AAD 2023CA search for production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{2}}}^{0}}{{\mathit H}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ or ${{\mathit Z}}{{\mathit Z}}$, and ${{\mathit H}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ using 140 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 4, 5 for limits on production cross section times branching ratios in the ranges ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.5 - 1.5$ TeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 0.5$ TeV.
57  AAD 2023CR search for ${{\mathit H}_{{{2}}}^{0}}$ having flavor-violating couplings to ${{\mathit t}}{{\mathit c}}$ or ${{\mathit t}}{{\mathit u}}$, produced in association with top quark(s), using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 14 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 1.5$ TeV with various assumptions on the flavor-changing couplings.
58  AAD 2023O search for production of an ${{\mathit A}^{0}}$ in gluon-gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$, decaying to ${{\mathit Z}}{{\mathit H}}$ in the final states ${{\mathit \nu}}{{\overline{\mathit \nu}}}{{\mathit b}}{{\overline{\mathit b}}}$ and ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.22 - 2.0$ TeV, and Fig. 11 for limits with both production components.
59  AAD 2023R search for the decay ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ in 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $10 - 70$ GeV.
60  AAD 2023U search for the decay ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit \gamma}}$ with ${{\mathit Z}}$ decaying hadronically in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8(a) for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $1.0 - 6.8$ TeV.
61  AAD 2023Z search for the decay chain ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10 for limits on the product of production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.251 - 1.6$ TeV.
62  HAYRAPETYAN 2023C search for ${{\mathit H}_{{{{1,2}}}}^{0}}$ $\rightarrow$ ${{\mathit e}}{{\mathit \mu}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on production cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $110 - 160$ GeV.
63  HAYRAPETYAN 2023G search for dimuon resonance in the mass range $1.1 - 2.6$ or $4.2 - 7.9$ GeV in 96.6 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, in inclusive and high ${{\mathit p}_{{{T}}}}$ selections. See their Fig. 5 for cross section times branching ratio limits and Fig. 7 for mixing angle limits in two Higgs doublet plus singlet model (at 90$\%$ CL).
64  TUMASYAN 2023 search for production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{{1,2}}}}^{0}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.9 - 4.0$ TeV and ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $60 - 600$ GeV, and their interpretation in the NMSSM and the Two Real Singlet Model (TRSM).
65  TUMASYAN 2023M search for the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \gamma}}$ in 132 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 for limits on cross section times branching ratio in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 62$ GeV.
66  TUMASYAN 2023O search for ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$, each ${{\mathit H}}$ decaying to either ${{\mathit W}}{{\mathit W}^{*}}$ or ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 14 (upper) for limit on the product of production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.25 - 1.0$ TeV.
67  TUMASYAN 2023S search for gluon fusion and ${{\mathit b}}$-associated production of ${{\mathit H}_{{{{1,2}}}}^{0}}$ decaying to ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ using 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10 for limits on production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $0.06 - 3.5$ TeV.
68  AAD 2022A search for the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 for limits on the overall branching fraction in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $16 - 62$ GeV. See also Fig. 11 for limits without assuming ${{\mathit A}^{0}}$ is pseudoscalar.
69  AAD 2022D search for ${{\mathit Z}}{{\mathit A}^{0}}$ associate production with ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, ${{\mathit A}^{0}}$ decaying invisibly, in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for excluded regions in the mass parameter space of two Higgs doublet plus singlet (2HDM+${{\mathit A}^{0}}$) model with a certain choice of the model parameters.
70  AAD 2022F search for gluon fusion production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ using $126 - 139$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. B(${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$) = 0.582 is assumed. See their Fig. 14 for limit on the product of production cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.251 - 5.0$ TeV.
71  AAD 2022I search for ${{\mathit Z}}{{\mathit H}}$ associate production with the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}_{{{2}}}^{0}}{{\widetilde{\mathit \chi}}_{{{1}}}^{0}}$, ${{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\widetilde{\mathit \chi}}_{{{1}}}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$, and ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 3 and 4 for limits on the product of cross section times the branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 65$ GeV with various choices of NMSSM model parameters.
72  AAD 2022J search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$ with ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ and ${{\mathit Z}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$, ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV assuming SM gluon-gluon fusion production of the ${{\mathit H}}$. See their Fig. 17(b) for limits on the product of cross section times the branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 30$ GeV.
73  AAD 2022J search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ with ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV assuming SM gluon-gluon fusion production of the ${{\mathit H}}$ in the range of ${\mathit m}_{{{\mathit A}^{0}}}$ = $1 - 60$ GeV . See their Fig. 14(b) for limits on the product of cross section times the branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $1.5 - 60$ GeV (excluding ${{\mathit \psi}}$ and ${{\mathit \Upsilon}}$ regions). The limit also applies to the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$.
74  AAD 2022P search for invisibly decaying ${{\mathit H}_{{{1}}}^{0}}$, ${{\mathit H}_{{{2}}}^{0}}$ produced by vector boson fusion in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. Limit on the product of cross section times branching ratio in the range $0.1 - 1$ pb (95$\%$ CL) is given for the mass range $0.05 - 2$ TeV. See their Fig. 14.
75  AAD 2022Y search for gluon fusion production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \gamma}}{{\mathit \gamma}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 15 for limit on the product of production cross section times branching ratios to ${{\mathit H}}{{\mathit H}}$ for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.251 - 1.0$ TeV.
76  ABRATENKO 2022A search for a singlet scalar boson ${{\mathit H}_{{{1}}}^{0}}$ having a small mixing with the SM Higgs boson in the decay chain ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit \pi}^{+}}$, ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ from data corresponding to $7.01 \times 10^{20}$ protons on NuMI target. See their Fig. 13 (right) and Table V for limits on the SM Higgs component of ${{\mathit H}_{{{1}}}^{0}}$ for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $212 - 279$ MeV.
77  TUMASYAN 2022AK search for gluon-fusion production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}_{{{1}}}^{0}}$ ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 138 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $1 - 3$ TeV, ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $25 - 100$ GeV.
78  TUMASYAN 2022D search for production of an ${{\mathit H}_{{{2}}}^{0}}$ (denoted radion in the paper) in gluon fusion and vector boson fusion, decaying to ${{\mathit W}^{+}}{{\mathit W}^{-}}$ in the final states ${{\mathit \ell}}{{\mathit \nu}}$ + hadrons, using 137 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $1.0 - 4.5$ TeV.
79  AAD 2021AF search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ state decaying to ${{\mathit Z}}{{\mathit Z}}$ in the final states ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \ell}^{'+}}{{\mathit \ell}^{'-}}$ and ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \nu}}{{\overline{\mathit \nu}}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for upper limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 2.0$ TeV assuming ggF or VBF with narrow width approximation, and Fig. 5 for upper limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.4 - 2.0$ TeV assuming ggF, and with several assumptions on its width.
80  AAD 2021AI search for production of an ${{\mathit A}^{0}}$ in gluon-gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$, decaying to ${{\mathit Z}}$ ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ or ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit W}^{+}}{{\mathit W}^{-}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 9 and 13 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $230 - 800$ GeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $130 - 700$ GeV.
81  AAD 2021AY search for production of a scalar resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5(a) for limits on fiducial cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.16 - 3$ TeV with narrow width approximation, and Table 2 with several assumptions on the width.
82  AAD 2021AZ search for production of ${{\mathit A}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$ followed by ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$, ${{\mathit A}_{{{1}}}^{0}}$ $\rightarrow$ invisible in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $10 - 12$ for limits in terms of two-Higgs-doublet model plus singlet pseudoscalar and a fermionic Dark Matter particle.
83  AAD 2021BB search for production of ${{\mathit A}_{{{2}}}^{0}}$ by gluon fusion or associated ${{\mathit A}_{{{2}}}^{0}}{{\mathit b}}{{\overline{\mathit b}}}$ production, decaying to ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$ followed by ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$, ${{\mathit A}_{{{1}}}^{0}}$ $\rightarrow$ invisible in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for limits in terms of two-Higgs-doublet plus singlet pseudoscalar model.
84  AAD 2021BE search for production of ${{\mathit A}_{{{1}}}^{0}}$ associated with a single top quark and either a light quark or a ${{\mathit W}}$ boson, decaying to invisible final states, in 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $13 - 15$ for limits in terms of two-Higgs-doublet model plus singlet pseudoscalar, which is assumed to decay to a pair of Dark Matter particles.
85  ABRATENKO 2021 search for a singlet scalar boson ${{\mathit H}_{{{1}}}^{0}}$ having a small mixing with the SM Higgs boson in the decay chain ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit \pi}^{+}}$, ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ from data corresponding to $1.93 \times 10^{20}$ protons on NuMI target. See their Fig. 2 for limits on the SM Higgs component of ${{\mathit H}_{{{1}}}^{0}}$ for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $3 - 210$ MeV.
86  SIRUNYAN 2021A search for ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$ with ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, ${{\mathit A}^{0}}$ decaying invisibly, in 137 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for excluded regions in the mass parameter space of two Higgs doublet plus singlet model with a certain choice of the model parameters.
87  TUMASYAN 2021F search for gluon fusion production of ${{\mathit H}_{{{3}}}^{0}}$ decaying to ${{\mathit H}}$ ${{\mathit H}_{{{1,2}}}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 137 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 5 and 6 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{1,2}}}^{0}}}$ = $0.06 - 2.8$ TeV and ${\mathit m}_{{{\mathit H}_{{{3}}}^{0}}}$ = $0.24 - 3.0$ TeV.
88  AAD 2020AA search for ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ produced by gluon fusion or ${{\mathit b}}$-associated production using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 2(a), 2(b) for limits on the product of cross section and branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$, ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.2 - 2.5$ TeV.
89  AAD 2020AI search for ${{\mathit Z}}{{\mathit H}}$ production followed by the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 36 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The search looks for collimated ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ decays and is complementary to AABOUD 2018BX. See their Fig. 10 for limits on the product of production cross section and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 30$ GeV.
90  AAD 2020AO search for gluon fusion production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ (with hadronically decaying ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$) using 139 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. Limit on the product of production cross section times branching ratios in the range $28 - 817$ fb (95$\%$ CL) is given for ${\mathit m}_{{{\mathit A}^{0}}}$ = $1.0 - 3.0$ TeV, see their Fig. 13.
91  AAD 2020C combine searches for a scalar resonance decaying to ${{\mathit H}}{{\mathit H}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV from AABOUD 2019A, AABOUD 2019O, AABOUD 2018CQ, AABOUD 2019T, AABOUD 2018CW, and AABOUD 2018BU. See their Fig. 5(a) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.26 - 3$ TeV.
92  AAD 2020L search for ${{\mathit b}}$-associated production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit b}}{{\overline{\mathit b}}}$ in 27.8 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for limits on the product of cross section and branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.45 - 1.4$ TeV.
93  AAD 2020X search for vector-boson-fusion production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}{{\mathit H}}$ using 126 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on the product of cross section and branching ratio for the assumptions of a narrow- and broad-width resonance.
94  AAIJ 2020AL search for dimuon resonance in the mass range $0.2 - 60$ GeV in 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, in inclusive and ${{\mathit b}}$ quark associated production. Displaced decays are searched for for masses below 3 GeV. See their Figs. $7 - 9$ for cross section limits and Fig. 10 for limits for mixing angle in two Higgs doublet plus singlet model (at 90$\%$ CL).
95  SIRUNYAN 2020 search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ or ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10 for limits on the product of production cross section (normalized to the SM) and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $4 - 15$ GeV.
96  SIRUNYAN 2020AA search for ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ or ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}_{{{2}}}^{0}}$, ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on the product of cross section and branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.12 - 1$ TeV and ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.03 - 1$ TeV.
97  SIRUNYAN 2020AC search for gluon-fusion production of ${{\mathit A}^{0}}$ decaying to ${{\mathit Z}}{{\mathit H}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on the product of cross section and branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $220 - 400$ GeV.
98  SIRUNYAN 2020AD search for lepton-flavor violating decays ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \mu}}{{\mathit \tau}}$ , ${{\mathit e}}{{\mathit \tau}}$ of gluon-fusion-produced ${{\mathit H}_{{{2}}}^{0}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 (9) and Table 5 (6) for limits on production cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 0.9$ TeV for the ${{\mathit \mu}}{{\mathit \tau}}$ (${{\mathit e}}{{\mathit \tau}}$) final state.
99  SIRUNYAN 2020AF search for ${{\mathit H}_{{{2}}}^{0}}/{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit t}}{{\overline{\mathit t}}}$ with one or two charged leptons in the final state using kinematic variables in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 5 and 6 for limits on top Yukawa coupling of ${{\mathit H}_{{{2}}}^{0}}$ and ${{\mathit A}^{0}}$ for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$, ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.4 - 0.75$ TeV for various width assumptions.
100  SIRUNYAN 2020AP search for the decay ${{\mathit H}}$ or ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ (for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = 300 GeV) with boosted final-state topology in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on the product of production cross section (normalized to the SM) and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $3.6 - 21$ GeV, and Figs. 8 and 9 for its interpretation in terms of models with two Higgs doublets plus a singlet.
101  SIRUNYAN 2020Y search for gluon-fusion and vector-boson-fusion production of ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit W}^{+}}{{\mathit W}^{-}}$ in the final states ${{\mathit \ell}}{{\mathit \nu}}{{\mathit \ell}}{{\mathit \nu}}$ and ${{\mathit \ell}}{{\mathit \nu}}{{\mathit q}}{{\mathit q}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 for limits on the product of cross section and branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 3$ TeV.
102  SIRUNYAN 2020Z search for ${{\mathit H}_{{{{1,2}}}}^{0}}$ or ${{\mathit A}^{0}}$ production in association with a ${{\mathit t}}{{\overline{\mathit t}}}$ pair, decaying to ${{\mathit e}^{+}}{{\mathit e}^{-}}$ or ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, in 137 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 12 for limits on production cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$, ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 75$ GeV and $108 - 340$ GeV.
103  AABOUD 2019A search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in $27.5 - 36.1$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9(a) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.26 - 3$ TeV.
104  AABOUD 2019AG search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 36.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 (a) for limits on the product of production cross section (normalized to the SM) and branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 60$ GeV.
105  AABOUD 2019O search for a scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit W}}{{\mathit W}^{*}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 12 (left) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.5 - 3$ TeV.
106  AABOUD 2019T search for a scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit W}}{{\mathit W}^{*}}{{\mathit W}}{{\mathit W}^{*}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 500$ GeV, assuming SM decay rates for the ${{\mathit H}}$.
107  AABOUD 2019V combine published ATLAS data to constrain two-Higgs-doublet plus singlet pseudoscalar model with ${{\mathit A}_{{{1}}}^{0}}$ decaying to invisible final states. See their Fig. 19 for excluded parameter regions.
108  AABOUD 2019Y search for a narrow scalar resonance produced by gluon fusion or ${{\mathit b}}$ associated production, decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 4 and 5(a) for cross section limits for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 1.0$ TeV.
109  AALTONEN 2019 search for ${{\mathit b}}$ associated production of a scalar particle decaying to ${{\mathit b}}{{\overline{\mathit b}}}$ in 5.4 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. See their Fig. 3 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $100 - 300$ GeV.
110  SIRUNYAN 2019 search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 (left) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 900$ GeV.
111  SIRUNYAN 2019AE search for a scalar resonance produced in association with a ${{\mathit b}}{{\overline{\mathit b}}}$ pair, decaying to ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $25 - 70$ GeV.
112  SIRUNYAN 2019AN search for production of ${{\mathit A}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}{{\mathit A}_{{{1}}}^{0}}$ followed by ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$, ${{\mathit A}_{{{1}}}^{0}}$ $\rightarrow$ invisible in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, in the mass range ${\mathit m}_{{{\mathit A}_{{{2}}}^{0}}}$ = $0.2 - 1.6$ TeV, ${\mathit m}_{{{\mathit A}_{{{1}}}^{0}}}$ = $0.15 - 0.5$ TeV. See their Fig. 6 for limits in terms of two-Higgs-doublet plus singlet pseudoscalar model.
113  SIRUNYAN 2019AV search for a scalar resonance produced by gluon fusion or ${{\mathit b}}$-associated production, decaying to ${{\mathit Z}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ (${{\mathit \ell}}$ = ${{\mathit e}}$, ${{\mathit \mu}}$) or ${{\mathit \nu}}{{\overline{\mathit \nu}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.22 - 1.0$ TeV.
114  SIRUNYAN 2019B search for gluon fusion production of narrow scalar resonance with large transverse momentum, decaying to ${{\mathit b}}{{\overline{\mathit b}}}$, in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 7 and 8 for limits on cross section times branching ratio for the resonance mass of $50 - 350$ GeV.
115  SIRUNYAN 2019BB search for the decay ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and 35.9 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. $4 - 6$ for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $80 - 110$ GeV (some results in Fig. 5 for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $70 - 110$ GeV).
116  SIRUNYAN 2019BD search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for limits on the product of cross section times branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 62.5$ GeV. See also their Figs. 6 and 7 for interpretation of the data in terms of models with two Higgs doublets and a singlet.
117  SIRUNYAN 2019BE combine searches for ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV in various ${{\mathit H}}$ decay modes, from SIRUNYAN 2018A, SIRUNYAN 2018AF, SIRUNYAN 2018CW, SIRUNYAN 2019, and SIRUNYAN 2019H. See their Fig. 3 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.25 - 3$ TeV.
118  SIRUNYAN 2019BQ search for production of ${{\mathit H}_{{{{1,2}}}}^{0}}$ decaying to ${{\mathit A}^{0}}$ ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 2 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $90 - 150$ GeV, ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.25 - 3.55$ GeV.
119  SIRUNYAN 2019CR search for production of ${{\mathit H}_{{{2}}}^{0}}$ $/$ ${{\mathit A}^{0}}$ in gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$ pair, decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 for limits on cross section times branching ratio.
120  SIRUNYAN 2019H search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, where one ${{\mathit b}}{{\overline{\mathit b}}}$ pair is resolved and the other not. Limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.75 - 1.6$ TeV are obtained and combined with data from SIRUNYAN 2018AF. See their Fig. 5 (right).
121  AABOUD 2018AA search for production of a scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$, with ${{\mathit Z}}$ decaying hadronically, in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8(a) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $1.0 - 6.8$ TeV.
122  AABOUD 2018AG search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit g}}{{\mathit g}}$ in 36.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 2 and Table 6 for cross section limits in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 60$ GeV.
123  AABOUD 2018AH search for production of an ${{\mathit A}^{0}}$ in gluon-gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$, decaying to ${{\mathit Z}}$ ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $230 - 800$ GeV and ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $130 - 700$ GeV.
124  AABOUD 2018AI search for production of an ${{\mathit A}^{0}}$ in gluon-gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$, decaying to ${{\mathit Z}}{{\mathit H}}$ in the final states ${{\mathit \nu}}{{\overline{\mathit \nu}}}{{\mathit b}}{{\overline{\mathit b}}}$ and ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.2 - 2$ TeV. See also AABOUD 2018CC.
125  AABOUD 2018BF search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ state decaying to ${{\mathit Z}}{{\mathit Z}}$ in the final states ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ and ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \nu}}{{\overline{\mathit \nu}}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 6 for upper limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 1.2$ TeV assuming ggF or VBF with the NWA. See their Fig. 7 for upper limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.4 - 1.0$ TeV assuming ggF, and with several assumptions on its width.
126  AABOUD 2018BU search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit W}}{{\mathit W}^{*}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 500$ GeV.
127  AABOUD 2018BX search for associated production of ${{\mathit W}}{{\mathit H}}$ or ${{\mathit Z}}{{\mathit H}}$ followed by the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 9 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 60$ GeV. See also their Fig. 10 for the dependence of the limit on ${{\mathit A}^{0}}$ lifetime.
128  AABOUD 2018CQ search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 2 (above) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 1000$ GeV.
129  AABOUD 2018F search for production of a narrow scalar resonance decaying to ${{\mathit W}^{+}}{{\mathit W}^{-}}$ and ${{\mathit Z}}{{\mathit Z}}$, followed by hadronic decays of ${{\mathit W}}$ and ${{\mathit Z}}$, in 36.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 5(c) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $1.2 - 3.0$ TeV.
130  AAIJ 2018AM search for gluon-fusion production of ${{\mathit H}_{{{{1,2}}}}^{0}}$ decaying to ${{\mathit \mu}}{{\mathit \tau}}$ in 2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 2 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{{1,2}}}}^{0}}}$ = $45 - 195$ GeV.
131  AAIJ 2018AQ search for gluon-fusion production of a scalar particle ${{\mathit A}^{0}}$ decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 1.99 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and 0.98 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV. See their Fig. 4 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $5.5 - 15$ GeV (using the $\mathit E_{{\mathrm {cm}}}$ = 8 TeV data set).
132  AAIJ 2018AQ search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$, with one of the ${{\mathit A}^{0}}$ decaying to ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, in 1.99 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and 0.98 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV. See their Fig. 5 (right) for limits on the product of branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $5.5 - 15$ GeV (using the $\mathit E_{{\mathrm {cm}}}$ = 8 TeV data set).
133  SIRUNYAN 2018AF search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, where both ${{\mathit b}}{{\overline{\mathit b}}}$ pairs are not resolved. See their Fig. 9 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.75 - 3$ TeV.
134  SIRUNYAN 2018BA search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ state decaying to ${{\mathit Z}}{{\mathit Z}}$ in the final states ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit q}}{{\overline{\mathit q}}}$, and ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \nu}}{{\overline{\mathit \nu}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 10 and 11 for upper limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.13 - 3$ TeV with several assumptions on its width and on the fraction of Vector-Boson-Fusion of the total production cross section.
135  SIRUNYAN 2018CW search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, where both ${{\mathit b}}{{\overline{\mathit b}}}$ pairs are resolved. See their Fig. 9 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 1200$ GeV.
136  SIRUNYAN 2018DK search for production of a scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$, with ${{\mathit Z}}$ decaying to ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ or hadronically, in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.35 - 4$ TeV for different assumptions on the width of the resonance.
137  SIRUNYAN 2018DT search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on the product of branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 60$ GeV. See also their Fig. 8 for interpretation of the data in terms of models with two Higgs doublets and a singlet.
138  SIRUNYAN 2018DU search for production of a narrow scalar resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 35.9 fb${}^{-1}$ (taken in 2016) of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 (right) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.5 - 5$ TeV for several values of its width-to-mass ratio.
139  SIRUNYAN 2018ED search for production of an ${{\mathit A}^{0}}$ in gluon-gluon fusion and in association with a ${{\mathit b}}{{\overline{\mathit b}}}$, decaying to ${{\mathit Z}}{{\mathit H}}$ in the final states ${{\mathit \nu}}{{\overline{\mathit \nu}}}{{\mathit b}}{{\overline{\mathit b}}}$ or ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $0.8 - 2$ TeV.
140  SIRUNYAN 2018EE search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on the product of branching ratios in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $15 - 62.5$ GeV, normalized to the SM production cross section. See also their Fig. 5 for interpretation of the data in terms of models with two Higgs doublets and a singlet.
141  SIRUNYAN 2018F search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit W}}{{\mathit W}}$ ${{\mathit b}}{{\overline{\mathit b}}}$ or ${{\mathit Z}}{{\mathit Z}}{{\mathit b}}{{\overline{\mathit b}}}$ in the final state ${{\mathit \ell}}{{\mathit \ell}}{{\mathit \nu}}{{\mathit \nu}}{{\mathit b}}{{\overline{\mathit b}}}$ in 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $250 - 900$ GeV.
142  AABOUD 2017 search for production of a scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$ in 3.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for the limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.25 - 3.0$ TeV.
143  AABOUD 2017AP search for production of a scalar resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 36.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4(a) for limits on fiducial cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 2.7$ TeV with narrow width approximation.
144  AABOUD 2017AW search for production of a scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$ in 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.25 - 2.4$ TeV.
145  KHACHATRYAN 2017AZ search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$, and ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Figs. 4, 5, and 6 for cross section limits in the range ${\mathit m}_{{{\mathit A}^{0}}}$ = $5 - 62.5$ GeV. See also their Figs. 7, 8, and 9 for interpretation of the data in terms of models with two Higgs doublets and a singlet.
146  KHACHATRYAN 2017D search for production of a scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and 2.7 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 3 and 4 for the limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 2.0$ TeV.
147  KHACHATRYAN 2017R search for production of a narrow scalar resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 12.9 fb${}^{-1}$ (taken in 2016) of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 2 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.5 - 4.5$ TeV for several values of its width-to-mass ratio. Limits from combination with KHACHATRYAN 2016M are shown in their Figs. 4 and 6.
148  SIRUNYAN 2017CN search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 18.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 5 (above) and Table II for limits on the cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.3 - 1$ TeV, and Fig. 6 (above) and Table III for the corresponding limits by combining with data from KHACHATRYAN 2016BQ and KHACHATRYAN 2015R.
149  SIRUNYAN 2017Y search for production of a scalar resonance decaying to ${{\mathit Z}}{{\mathit \gamma}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and 2.7 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Figs. 3, 4 and Table 3 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.7 - 3.0$ TeV, and Fig. 5 for the corresponding limits for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 3.0$ TeV from combination with KHACHATRYAN 2017D data.
150  AABOUD 2016AB search for associated production of ${{\mathit W}}{{\mathit H}}$ with the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 3.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 8 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $20 - 60$ GeV.
151  AABOUD 2016AE search for production of a narrow scalar resonance decaying to ${{\mathit W}^{+}}{{\mathit W}^{-}}$ and ${{\mathit Z}}{{\mathit Z}}$ in 3.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 4 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.5 - 3$ TeV.
152  AABOUD 2016H search for production of a scalar resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 3.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 12 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.2 - 2$ TeV with different assumptions on the width.
153  AABOUD 2016I search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 3.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 10(c) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.5 - 3$ TeV.
154  AAD 2016AX search for production of a heavy ${{\mathit H}}$ state decaying to ${{\mathit Z}}{{\mathit Z}}$ in the final states ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \nu}}{{\overline{\mathit \nu}}}$, ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit q}}{{\overline{\mathit q}}}$, and${{\mathit \nu}}{{\overline{\mathit \nu}}}{{\mathit q}}{{\overline{\mathit q}}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig.12 for upper limits on ${\mathit \sigma (}{{\mathit H}}{)}$ B(${{\mathit H}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}}$) for ${\mathit m}_{{{\mathit H}}}$ ranging from 140 GeV to 1000 GeV.
155  AAD 2016C search for production of a heavy ${{\mathit H}}$ state decaying to ${{\mathit W}^{+}}{{\mathit W}^{-}}$ in the final states ${{\mathit \ell}}{{\mathit \nu}}{{\mathit \ell}}{{\mathit \nu}}$ and ${{\mathit \ell}}{{\mathit \nu}}{{\mathit q}}{{\mathit q}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Figs. 12, 13, and 16 for upper limits on ${\mathit \sigma (}{{\mathit H}}{)}$ B(${{\mathit H}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$) for ${\mathit m}_{{{\mathit H}}}$ ranging from 300 GeV to 1000 or 1500 GeV with various assumptions on the total width of ${{\mathit H}}$.
156  AAD 2016L search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \gamma}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 4 (upper right) for limits on cross section times branching ratios (normalized to the SM ${{\mathit H}}$ cross section) for ${\mathit m}_{{{\mathit A}^{0}}}$ = $10 - 60$ GeV.
157  AAD 2016L search for the decay ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \gamma}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 4 (lower right) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = 600 GeV and ${\mathit m}_{{{\mathit A}^{0}}}$ = $10 - 245$ GeV, and Table 5 for limits for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$= 300 and 900 GeV.
158  AALTONEN 2016C search for electroweak associated production of ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}^{\pm}}$ followed by the decays ${{\mathit H}^{\pm}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit W}^{*}}$, ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $10 - 105$ GeV and ${\mathit m}_{{{\mathit H}^{\pm}}}$ = $30 - 300$ GeV. See their Fig. 3 for excluded parameter region in a two-doublet model in which ${{\mathit H}_{{{1}}}^{0}}$ has no direct decay to fermions.
159  KHACHATRYAN 2016BG search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 6 for limits on the cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $1.15 - 3$ TeV.
160  KHACHATRYAN 2016BQ search for a resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit b}}{{\overline{\mathit b}}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 9 for limits on the cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.26 - 1.1$ TeV.
161  KHACHATRYAN 2016F search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}$ ${{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 8 for cross section limits for ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = $4 - 8$ GeV.
162  KHACHATRYAN 2016M search for production of a narrow resonance decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and 3.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. See their Fig. 3 (top) for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.5 - 4$ TeV.
163  KHACHATRYAN 2016P search for gluon fusion production of an ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 8 (lower right) for cross section limits for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 350$ GeV.
164  KHACHATRYAN 2016P search for gluon fusion production of an ${{\mathit A}^{0}}$ decaying to ${{\mathit Z}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 10 for cross section limits for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $220 - 350$ GeV.
165  AAD 2015BK search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}{{\mathit H}}$ in the final state ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 19.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 14(c) for ${\mathit \sigma (}{{\mathit H}_{{{2}}}^{0}}{)}$ B(${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$) for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $500 - 1500$ GeV with ${\Gamma}_{{\mathit H}_{{{2}}}^{0}}$ = 1 GeV.
166  AAD 2015BZ search for the decay ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ (${\mathit m}_{{{\mathit H}}}$ = 125 GeV) in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 6 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit A}^{0}}}$ = $3.7 - 50$ GeV.
167  AAD 2015BZ search for a state ${{\mathit H}_{{{2}}}^{0}}$ via the decay ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 6 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $100 - 500$ GeV and ${\mathit m}_{{{\mathit A}^{0}}}$ = 5 GeV.
168  AAD 2015CE search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}{{\mathit H}}$ in the final states ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ and ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit W}}{{\mathit W}^{*}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV and combine with data from AAD 2015H and AAD 2015BK. A limit ${\mathit \sigma (}{{\mathit H}_{{{2}}}^{0}}{)}$ B(${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$) $<$ $2.1 - 0.011$ pb (95$\%$ CL) is given for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 1000$ GeV. See their Fig. 6.
169  AAD 2015H search for production of a heavy ${{\mathit H}_{{{2}}}^{0}}$ decaying to ${{\mathit H}}{{\mathit H}}$ in the finalstate ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit b}}{{\overline{\mathit b}}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV.A limit of ${\mathit \sigma (}{{\mathit H}_{{{2}}}^{0}}{)}$ B(${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\mathit H}}$) $<$ $3.5 - 0.7$ pb is given for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $260 - 500$ GeV at 95$\%$ CL. See their Fig. 3.
170  AAD 2015S search for production of ${{\mathit A}^{0}}$ decaying to ${{\mathit Z}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$, ${{\mathit \nu}}{{\overline{\mathit \nu}}}{{\mathit b}}{{\overline{\mathit b}}}$ and ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 3 for cross section limits for ${\mathit m}_{{{\mathit A}^{0}}}$ = $200 - 1000$ GeV.
171  KHACHATRYAN 2015AW search for production of a heavy state ${{\mathit H}_{{{2}}}^{0}}$ of an electroweak singlet extension of the Standard Model via the decays of ${{\mathit H}_{{{2}}}^{0}}$ to ${{\mathit W}^{+}}{{\mathit W}^{-}}$ and ${{\mathit Z}}{{\mathit Z}}$ in up to 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and up to 19.7 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV in the range ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $145 - 1000$ GeV. See their Figs. 8 and 9 for limits in the parameter space of the model.
172  KHACHATRYAN 2015BB search for production of a resonance ${{\mathit H}}$ decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 7 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}}}$ = $150 - 850$ GeV.
173  KHACHATRYAN 2015N search for production of ${{\mathit A}^{0}}$ decaying to ${{\mathit Z}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit b}}{{\overline{\mathit b}}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 3 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $225 - 600$ GeV.
174  KHACHATRYAN 2015O search for production of a high-mass narrow resonance ${{\mathit A}^{0}}$ decaying to ${{\mathit Z}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 6 for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit A}^{0}}}$ = $800 - 2500$ GeV.
175  KHACHATRYAN 2015R search for a narrow scalar resonance decaying to ${{\mathit H}}$ ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}{{\mathit b}}{{\overline{\mathit b}}}$ in 17.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 5 (top) for limits on cross section times branching ratios for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$ = $0.27 - 1.1$ TeV.
176  AAD 2014AP search for a second ${{\mathit H}}$ state decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in addition to the state at about 125 GeV in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 4 for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}}}$ = $65 - 600$ GeV.
177  AAD 2014M search for the decay cascade ${{\mathit H}_{{{2}}}^{0}}$ $\rightarrow$ ${{\mathit H}^{\pm}}{{\mathit W}^{\mp}}$ $\rightarrow$ ${{\mathit H}}{{\mathit W}^{\pm}}{{\mathit W}^{\mp}}$, ${{\mathit H}}$ decaying to ${{\mathit b}}{{\overline{\mathit b}}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Table III for limits on cross section times branching ratio for ${\mathit m}_{{{\mathit H}_{{{2}}}^{0}}}$= $325 - 1025$ GeV and ${\mathit m}_{{{\mathit H}^{+}}}$= $225 - 925$ GeV.
178  CHATRCHYAN 2014G search for a second ${{\mathit H}}$ state decaying to ${{\mathit W}}{{\mathit W}^{(*)}}$ in addition to the observed signal at about 125 GeV using 4.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 19.4 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Fig. 21 (right) for cross section limits in the mass range $110 - 600$ GeV.
179  KHACHATRYAN 2014P search for a second ${{\mathit H}}$ state decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in addition to the observed signal at about 125 GeV using 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 19.7 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. See their Figs. 27 and 28 for cross section limits in the mass range $110 - 150$ GeV.
180  AALTONEN 2013P search for production of a heavy Higgs boson ${{\mathit H}^{'0}}$ that decays into a charged Higgs boson ${{\mathit H}^{\pm}}$ and a lighter Higgs boson ${{\mathit H}}$ via the decay chain ${{\mathit H}^{'0}}$ $\rightarrow$ ${{\mathit H}^{\pm}}{{\mathit W}^{\mp}}$, ${{\mathit H}^{\pm}}$ $\rightarrow$ ${{\mathit W}^{\pm}}{{\mathit H}}$, ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ in the final state ${{\mathit \ell}}{{\mathit \nu}}$ plus 4 jets in 8.7 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. See their Fig. 4 for limits on cross section times branching ratio in the ${\mathit m}_{{{\mathit H}^{\pm}}}−{\mathit m}_{{{\mathit H}^{'0}}}$ plane for ${\mathit m}_{{{\mathit H}}}$ = 126 GeV.
181  CHATRCHYAN 2013BJ search for ${{\mathit H}}$ production in the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ in 5.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV. See their Fig. 2 for limits on cross section times branching ratio.
182  AALTONEN 2011P search in 2.7 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV for the decay chain ${{\mathit t}}$ $\rightarrow$ ${{\mathit b}}{{\mathit H}^{+}}$, ${{\mathit H}^{+}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ with ${\mathit m}_{{{\mathit A}^{0}}}$ between 4 and 9 GeV. See their Fig.$~$4 for limits on B(${{\mathit t}}$ $\rightarrow$ ${{\mathit b}}{{\mathit H}^{+}}$) for 90 $<$ ${\mathit m}_{{{\mathit H}^{+}}}<$ 160 GeV.
183  ABBIENDI 2010 search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit H}}$ with the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}_{{{1}}}^{0}}{{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$, ${{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}_{{{1}}}^{0}}$ + (${{\mathit \gamma}}$ or ${{\mathit Z}^{*}}$), when ${{\widetilde{\mathit \chi}}_{{{1}}}^{0}}$ and ${{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$ are nearly degenerate. For a mass difference of 2 (4) GeV, a lower limit on ${\mathit m}_{{{\mathit H}}}$ of 108.4 (107.0) GeV (95$\%$ CL) is obtained for SM ${{\mathit Z}}{{\mathit H}}$ cross section and B(${{\mathit H}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}_{{{1}}}^{0}}{{\widetilde{\mathit \chi}}_{{{2}}}^{0}}$) = 1.
184  SCHAEL 2010 search for the process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit Z}}$ followed by the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ with ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, ${{\mathit \nu}}{{\overline{\mathit \nu}}}$ at $\mathit E_{{\mathrm {cm}}}$ = $183 - 209$ GeV. For a ${{\mathit H}}{{\mathit Z}}{{\mathit Z}}$ coupling equal to the SM value, B(${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$) = B(${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$) = 1, and ${\mathit m}_{{{\mathit A}^{0}}}$ = $4 - 10$ GeV, ${\mathit m}_{{{\mathit H}}}$ up to 107 GeV is excluded at 95$\%$ CL.
185  ABAZOV 2009V search for ${{\mathit H}}$ production followed by the decay chain ${{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ or ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in 4.2 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. See their Fig. 3 for limits on $\sigma ({{\mathit H}})\cdot{}B({{\mathit H}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$) for ${\mathit m}_{{{\mathit A}^{0}}}$ = $3.6 - 19$ GeV.
186  ABBIENDI 2005A search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit A}^{0}}$ in general Type-II two-doublet models, with decays ${{\mathit H}_{{{1}}}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}$, ${{\mathit g}}{{\mathit g}}$, ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$, and ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$.
187  ABBIENDI 2004K search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit Z}}$ with ${{\mathit H}}$ decaying to two jets of any flavor including ${{\mathit g}}{{\mathit g}}$. The limit is for SM production cross section with B(${{\mathit H}}$ $\rightarrow$ ${{\mathit j}}{{\mathit j}}$) = 1.
188  ABDALLAH 2004 consider the full combined LEP and LEP2 datasets to set limits on the Higgs coupling to ${{\mathit W}}$ or ${{\mathit Z}}$ bosons, assuming SM decays of the Higgs. Results in Fig. 26.
189  ACHARD 2004B search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit Z}}$ with ${{\mathit H}}$ decaying to ${{\mathit b}}{{\overline{\mathit b}}}$, ${{\mathit c}}{{\overline{\mathit c}}}$, or ${{\mathit g}}{{\mathit g}}$. The limit is for SM production cross section with B(${{\mathit H}}$ $\rightarrow$ ${{\mathit j}}{{\mathit j}}$) = 1.
190  ACHARD 2004F search for ${{\mathit H}}$ with anomalous coupling to gauge boson pairs in the processes ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit \gamma}}$, ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit H}}$, ${{\mathit H}}{{\mathit Z}}$ with decays ${{\mathit H}}$ $\rightarrow$ ${{\mathit f}}{{\overline{\mathit f}}}$, ${{\mathit \gamma}}{{\mathit \gamma}}$, ${{\mathit Z}}{{\mathit \gamma}}$, and ${{\mathit W}^{*}}{{\mathit W}}$ at $\mathit E_{{\mathrm {cm}}}$ = $189 - 209$ GeV. See paper for limits.
191  ABBIENDI 2003F search for ${{\mathit H}}$ $\rightarrow$ anything in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit Z}}$, using the recoil mass spectrum of ${{\mathit Z}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ or ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$. In addition, it searched for ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \nu}}{{\overline{\mathit \nu}}}$ and ${{\mathit H}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ or photons. Scenarios with large width or continuum ${{\mathit H}}$ mass distribution are considered. See their Figs. 11--14 for the results.
192  ABBIENDI 2003G search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}_{{{1}}}^{0}}{{\mathit Z}}$ followed by ${{\mathit H}_{{{1}}}^{0}}$ $\rightarrow$ ${{\mathit A}^{0}}{{\mathit A}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit c}}{{\overline{\mathit c}}}$, ${{\mathit g}}{{\mathit g}}$, or ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ in the region ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}$ = 45-86 GeV and ${\mathit m}_{{{\mathit A}^{0}}}$ = 2-11 GeV. See their Fig. 7 for the limits.
193  Search for associated production of a ${{\mathit \gamma}}{{\mathit \gamma}}$ resonance with a ${{\mathit Z}}~$boson, followed by ${{\mathit Z}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}$, ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$, or ${{\mathit \nu}}{{\overline{\mathit \nu}}}$, at $\mathit E_{{\mathrm {cm}}}{}\leq{}$209 GeV. The limit is for a ${{\mathit H}}$ with SM production cross section and B(${{\mathit H}}$ $\rightarrow$ ${{\mathit f}}{{\overline{\mathit f}}}$)=0 for all fermions ${{\mathit f}}$.
194  For B(${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$)=1, ${\mathit m}_{{{\mathit H}}}>113.1$ GeV is obtained.
195  HEISTER 2002M search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit Z}}$, assuming that ${{\mathit H}}$ decays to ${{\mathit q}}{{\overline{\mathit q}}}$, ${{\mathit g}}{{\mathit g}}$, or ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ only. The limit assumes SM production cross section.
196  ABBIENDI 2001E search for neutral Higgs bosons in general Type-II two-doublet models, at $\mathit E_{{\mathrm {cm}}}{}\leq{}$189 GeV. In addition to usual final states, the decays ${{\mathit H}_{{{1}}}^{0}}$, ${{\mathit A}^{0}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}$, ${{\mathit g}}{{\mathit g}}$ are searched for. See their Figs.$~$15,16 for excluded regions.
197  ACCIARRI 2000R search for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit H}}{{\mathit \gamma}}$ with ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$, ${{\mathit Z}}{{\mathit \gamma}}$, or ${{\mathit \gamma}}{{\mathit \gamma}}$. See their Fig.$~$3 for limits on $\sigma \cdot{}$B. Explicit limits within an effective interaction framework are also given, for which the Standard Model Higgs search results are used in addition.
198  ACCIARRI 2000R search for the two-photon type processes ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit H}}$ with ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ or ${{\mathit \gamma}}{{\mathit \gamma}}$. See their Fig.$~$4 for limits on $\Gamma\mathrm {({{\mathit H}} \rightarrow {{\mathit \gamma}} {{\mathit \gamma}})}\cdot{}B({{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ or ${{\mathit b}}{{\overline{\mathit b}}}$) for ${\mathit m}_{{{\mathit H}}}=70 - 170$ GeV.
199  GONZALEZ-GARCIA 1998B use ${D0}$ limit for ${{\mathit \gamma}}{{\mathit \gamma}}$ events with missing $\mathit E_{\mathit T}$ in ${{\mathit p}}{{\overline{\mathit p}}}$ collisions (ABBOTT 1998) to constrain possible ${{\mathit Z}}{{\mathit H}}$ or ${{\mathit W}}{{\mathit H}}$ production followed by unconventional ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ decay which is induced by higher-dimensional operators. See their Figs.$~$1 and$~$2 for limits on the anomalous couplings.
200  KRAWCZYK 1997 analyse the muon anomalous magnetic moment in a two-doublet Higgs model (with type$~$II Yukawa couplings) assuming no ${{\mathit H}_{{{1}}}^{0}}{{\mathit Z}}{{\mathit Z}}$ coupling and obtain ${\mathit m}_{{{\mathit H}_{{{1}}}^{0}}}{ {}\gtrsim{} }5$ GeV or ${\mathit m}_{{{\mathit A}^{0}}}{ {}\gtrsim{} }5$ GeV for tan $\beta >50$. Other Higgs bosons are assumed to be much heavier.
201  ALEXANDER 1996H give B(${{\mathit Z}}$ $\rightarrow$ ${{\mathit H}}{{\mathit \gamma}}){\times }B({{\mathit H}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}$) $<1 - 4 \times 10^{-5}$ (95$\%$CL) and B(${{\mathit Z}}$ $\rightarrow$ ${{\mathit H}}{{\mathit \gamma}}){\times }B({{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$) $<0.7 - 2 \times 10^{-5}$ (95$\%$CL) in the range 20 $<{\mathit m}_{{{\mathit H}}}$ $<$80 GeV.
References