# ${{\boldsymbol H}^{0}}$ SIGNAL STRENGTHS IN DIFFERENT CHANNELS

The ${{\mathit H}^{0}}$ signal strength in a particular final state ${{\mathit x}}{{\mathit x}}$ is given by the cross section times branching ratio in this channel normalized to the Standard Model (SM) value, $\sigma$ $\cdot{}$ B( ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit x}}{{\mathit x}}$ ) $/$ ($\sigma$ $\cdot{}$ B( ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit x}}{{\mathit x}}$ ))$_{{\mathrm {SM}}}$, for the specified mass value of ${{\mathit H}^{0}}$. For the SM predictions, see DITTMAIER 2011 , DITTMAIER 2012 , and HEINEMEYER 2013A. Results for fiducial and differential cross sections are also listed below.

# ${{\boldsymbol \gamma}}{{\boldsymbol \gamma}}$ Final State INSPIRE search

VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 1.11 {}^{+0.10}_{-0.09}}$ OUR AVERAGE
$1.20$ ${}^{+0.18}_{-0.14}$ 1
 2019 AT
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
$0.99$ ${}^{+0.15}_{-0.14}$ 2
 2018 BO
ATLS ${{\mathit p}}{{\mathit p}}$ , 13 TeV, 36.1 fb${}^{-1}$
$1.14$ ${}^{+0.19}_{-0.18}$ 3, 4
 2016 AN
LHC ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$5.97$ ${}^{+3.39}_{-3.12}$ 5
 2013 M
TEVA ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 1.96 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
6
 2019 L
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV, diff. x-section
$1.18$ ${}^{+0.17}_{-0.14}$ 7
 2018 DS
CMS ${{\mathit p}}{{\mathit p}}$ , ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ , 13 TeV, floated ${\mathit m}_{{{\mathit H}^{0}}}$
$1.14$ ${}^{+0.27}_{-0.25}$ 4
 2016 AN
ATLS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.11$ ${}^{+0.25}_{-0.23}$ 4
 2016 AN
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
8
 2016 G
CMS ${{\mathit p}}{{\mathit p}}$ , 8 TeV, diff. x-section
$1.17$ $\pm0.23$ ${}^{+0.10}_{-0.08}$ ${}^{+0.12}_{-0.08}$ 9
 2014 BC
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7, 8 TeV
10
 2014 BJ
ATLS ${{\mathit p}}{{\mathit p}}$ , 8 TeV, diff. x-section
$1.14$ $\pm0.21$ ${}^{+0.09}_{-0.05}$ ${}^{+0.13}_{-0.09}$ 11
 2014 P
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.55$ ${}^{+0.33}_{-0.28}$ 12
 2013 AK
ATLS ${{\mathit p}}{{\mathit p}}$ , 7 and 8 TeV
$7.81$ ${}^{+4.61}_{-4.42}$ 13
 2013 L
CDF ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 1.96 TeV
$4.20$ ${}^{+4.60}_{-4.20}$ 14
 2013 L
D0 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 1.96 TeV
$1.8$ $\pm0.5$ 15
 2012 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7, 8 TeV
$2.2$ $\pm0.7$ 15
 2012 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7 TeV
$1.5$ $\pm0.6$ 15
 2012 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 8 TeV
$1.54$ ${}^{+0.46}_{-0.42}$ 16
 2012 N
CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7, 8 TeV
1  SIRUNYAN 2019AT perform a combine fit to 35.9 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV.
2  AABOUD 2018BO use 36.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The signal strengths for the individual production modes are: $0.81$ ${}^{+0.19}_{-0.18}$ for gluon fusion, $2.0$ ${}^{+0.6}_{-0.5}$ for vector boson fusion, $0.7$ ${}^{+0.9}_{-0.8}$ for ${{\mathit V}}{{\mathit H}^{0}}$ production (${{\mathit V}}$ = ${{\mathit W}}$, ${{\mathit Z}}$), and $0.5$ $\pm0.6$ for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ and ${{\mathit t}}{{\mathit H}^{0}}$ production. Other measurements of cross sections and couplings are summarized in their Section 10. The quoted values are given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.09 GeV.
3  AAD 2016AN perform fits to the ATLAS and CMS data at $\mathit E_{{\mathrm {cm}}}$ = 7 and 8 TeV. The signal strengths for individual production processes are $1.10$ ${}^{+0.23}_{-0.22}$ for gluon fusion, $1.3$ $\pm0.5$ for vector boson fusion, $0.5$ ${}^{+1.3}_{-1.2}$ for ${{\mathit W}}{{\mathit H}^{0}}$ production, $0.5$ ${}^{+3.0}_{-2.5}$ for ${{\mathit Z}}{{\mathit H}^{0}}$ production, and $2.2$ ${}^{+1.6}_{-1.3}$ for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production.
4  AAD 2016AN: In the fit, relative production cross sections are fixed to those in the Standard Model. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.09 GeV.
5  AALTONEN 2013M combine all Tevatron data from the CDF and D0 Collaborations with up to 10.0 fb${}^{-1}$ and 9.7 fb${}^{-1}$, respectively, of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
6  SIRUNYAN 2019L measure fiducial and differential cross sections of the process ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV with 35.9 fb${}^{-1}$. See their Figs. $4 - 11$.
7  SIRUNYAN 2018DS use 35.9 fb${}^{-1}$ of ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}$ collisions with ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The Higgs mass is floated in the measurement of a signal strength. The result is $1.18$ ${}^{+0.12}_{-0.11}$(stat.)${}^{+0.09}_{-0.07}$(syst.)${}^{+0.07}_{-0.06}$(theory), which is largely insensitive to the Higgs mass around 125 GeV.
8  KHACHATRYAN 2016G measure fiducial and differential cross sections of the process ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV with 19.7 fb${}^{-1}$. See their Figs. $4 - 6$ and Table 1 for data.
9  AAD 2014BC use 4.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 20.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The last uncertainty in the measurement is theory systematics. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.4 GeV. The signal strengths for the individual production modes are: $1.32$ $\pm0.38$ for gluon fusion, $0.8$ $\pm0.7$ for vector boson fusion, $1.0$ $\pm1.6$ for ${{\mathit W}}{{\mathit H}^{0}}$ production, $0.1$ ${}^{+3.7}_{-0.1}$ for ${{\mathit Z}}{{\mathit H}^{0}}$ production, and $1.6$ ${}^{+2.7}_{-1.8}$ for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production.
10  AAD 2014BJ measure fiducial and differential cross sections of the process ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV with 20.3 fb${}^{-1}$. See their Table 3 and Figs. $3 - 12$ for data.
11  KHACHATRYAN 2014P use 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. The last uncertainty in the measurement is theory systematics. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 124.7 GeV. The signal strength for the gluon fusion and ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ production mode is $1.13$ ${}^{+0.37}_{-0.31}$, while the signal strength for the vector boson fusion and ${{\mathit W}}{{\mathit H}^{0}}$ , ${{\mathit Z}}{{\mathit H}^{0}}$ production mode is $1.16$ ${}^{+0.63}_{-0.58}$.
12  AAD 2013AK use 4.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 20.7 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.5 GeV.
13  AALTONEN 2013L combine all CDF results with $9.45 - 10.0$ fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
14  ABAZOV 2013L combine all D0 results with up to 9.7 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
15  AAD 2012AI obtain results based on 4.8 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 5.9 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted signal strengths are given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 126 GeV. See also AAD 2012DA.
16  CHATRCHYAN 2012N obtain results based on 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$=7 TeV and 5.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$=8 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$=125.5 GeV. See also CHATRCHYAN 2013Y.
References:
 SIRUNYAN 2019AT
EPJ C79 421 Combined measurements of Higgs boson couplings in proton?proton collisions at $\sqrt{s}=13\,\text {Te}\text {V}$
 SIRUNYAN 2019L
JHEP 1901 183 Measurement of inclusive and differential Higgs boson production cross sections in the diphoton decay channel in proton-proton collisions at $\sqrt{s}=$ 13 TeV
 AABOUD 2018BO
PR D98 052005 Measurements of Higgs boson properties in the diphoton decay channel with 36 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV with the ATLAS detector
 SIRUNYAN 2018DS
JHEP 1811 185 Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at $\sqrt{s} =$ 13 TeV
JHEP 1608 045 Measurements of the Higgs Boson Production and Decay Rates and Constraints on its Couplings from a Combined ATLAS and CMS Analysis of the LHC ${{\mathit p}}{{\mathit p}}$ Collision Data at $\sqrt {s }$ =7 and 8 TeV
 KHACHATRYAN 2016G
EPJ C76 13 Measurement of Differential Cross Sections for Higgs Boson Production in the Diphoton Decay Channel in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV
PR D90 112015 Measurement of Higgs Boson Production in the Diphoton Decay Channel in ${{\mathit p}}{{\mathit p}}$ Collisions at Center-of-Mass Energies of 7 and 8 TeV with the ATLAS Detector
JHEP 1409 112 Measurements of Fiducial and Differential Cross Sections for Higgs Boson Production in the Diphoton Decay Channel at $\sqrt {s }$ = 8 TeV with ATLAS
 KHACHATRYAN 2014P
EPJ C74 3076 Observation of the Diphoton Decay of the Higgs Boson and Measurement of its Properties
PR D88 052011 Combined Search for the Higgs Boson with the ${D0}$ Experiment