# ${{\boldsymbol H}^{0}}$ 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.

# ${{\boldsymbol Z}}{{\boldsymbol Z}^{*}}$ Final State INSPIRE search

VALUE CL% DOCUMENT ID TECN  COMMENT
$\bf{ 1.20 {}^{+0.12}_{-0.11}}$ OUR AVERAGE
$1.06$ ${}^{+0.19}_{-0.17}$ 1
 2019 AT
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
$1.28$ ${}^{+0.21}_{-0.19}$ 2
 2018 AJ
ATLS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
$1.29$ ${}^{+0.26}_{-0.23}$ 3, 4
 2016 AN
LHC ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$<6.5$ 95 5
 2019 N
ATLS ${{\mathit p}}{{\mathit p}}$ , 13 TeV, off-shell
$<3.8$ 95 6
 2018 BP
ATLS ${{\mathit p}}{{\mathit p}}$ , 13 TeV, off-shell
$1.05$ ${}^{+0.15}_{-0.14}$ ${}^{+0.11}_{-0.09}$ 7
 2017 AV
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
$1.52$ ${}^{+0.40}_{-0.34}$ 4
 2016 AN
ATLS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.04$ ${}^{+0.32}_{-0.26}$ 4
 2016 AN
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.46$ ${}^{+0.35}_{-0.31}$ ${}^{+0.19}_{-0.13}$ 8
 2016 K
ATLS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
9
 2016 AR
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV cross sections
$1.44$ ${}^{+0.34}_{-0.31}$ ${}^{+0.21}_{-0.11}$ 10
 2015 F
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7, 8 TeV
11
 2014 AR
ATLS ${{\mathit p}}{{\mathit p}}$ , 8 TeV, differential cross section
$0.93$ ${}^{+0.26}_{-0.23}$ ${}^{+0.13}_{-0.09}$ 12
 2014 AA
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.43$ ${}^{+0.40}_{-0.35}$ 13
 2013 AK
ATLS ${{\mathit p}}{{\mathit p}}$ , 7 and 8 TeV
$0.80$ ${}^{+0.35}_{-0.28}$ 14
 2013 J
CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7, 8 TeV
$1.2$ $\pm0.6$ 15
 2012 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7, 8 TeV
$1.4$ $\pm1.1$ 15
 2012 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 7 TeV
$1.1$ $\pm0.8$ 15
 2012 AI
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , 8 TeV
$0.73$ ${}^{+0.45}_{-0.33}$ 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 2018AJ perform analyses using ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}^{*}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ (${{\mathit \ell}}$ = ${{\mathit e}}$ , ${{\mathit \mu}}$ ) with data of 36.1 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. Results are given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.09 GeV. The inclusive cross section times branching ratio for ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}^{*}}$ decay ($\vert \eta ({{\mathit H}^{0}})\vert$ $<$ 2.5) is measured to be $1.73$ ${}^{+0.26}_{-0.24}$ pb (with $1.34$ ${}^{+0.09}_{-0.09}$ pb expected in the SM).
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 $1.13$ ${}^{+0.34}_{-0.31}$ for gluon fusion and $0.1$ ${}^{+1.1}_{-0.6}$ for vector boson fusion.
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  AABOUD 2019N measure the spectrum of the four-lepton invariant mass m$_{ 4 {{\mathit \ell}} }$ (${{\mathit \ell}}$ = ${{\mathit e}}$ or ${{\mathit \mu}}$) using 36.1 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The quoted signal strength upper limit is obtained from 180 GeV $<$ m$_{ 4 {{\mathit \ell}} }$ $<$ 1200 GeV.
6  AABOUD 2018BP measure an off-shell Higgs boson production using ${{\mathit Z}}$ ${{\mathit Z}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ and ${{\mathit Z}}$ ${{\mathit Z}}$ $\rightarrow$ 2 ${{\mathit \ell}}$2 ${{\mathit \nu}}$ (${{\mathit \ell}}$ = ${{\mathit e}}$ , ${{\mathit \mu}}$ ) decay channels with 36.1 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The quoted signal strength upper limit is obtained from a combination of these two channels, where 220 GeV $<$ m$_{ 4 {{\mathit \ell}} }$ $<$ 2000 GeV for ${{\mathit Z}}$ ${{\mathit Z}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ and 250 GeV $<$ m${}^{ZZ}_{T}$ $<$ 2000 GeV for ${{\mathit Z}}$ ${{\mathit Z}}$ $\rightarrow$ 2 ${{\mathit \ell}}$2 ${{\mathit \nu}}$ (m${}^{ZZ}_{T}$ is defined in their Section 5). See their Table 2 for each measurement.
7  SIRUNYAN 2017AV use 35.9 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The quoted signal strength, obtained from the analysis of ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}^{*}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ (${{\mathit \ell}}$ = ${{\mathit e}}$ , ${{\mathit \mu}}$ ) decays, is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.09 GeV. The signal strengths for different production modes are given in their Table 3. The fiducial and differential cross sections are shown in their Fig. 10.
8  AAD 2016K use up to 4.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and up to 20.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.36 GeV.
9  KHACHATRYAN 2016AR use data of 5.1 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 19.7 fb${}^{-1}$ at 8 TeV. The fiducial cross sections for the production of 4 leptons via ${{\mathit H}^{0}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ decays are measured to be $0.56$ ${}^{+0.67}_{-0.44}{}^{+0.21}_{-0.06}$ fb at 7 TeV and $1.11$ ${}^{+0.41}_{-0.35}{}^{+0.14}_{-0.10}$ fb at 8 TeV in their fiducial region (Table 2). The differential cross sections at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV are also shown in Figs. 4 and 5. The results are given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
10  AAD 2015F 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 quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.36 GeV. The signal strength for the gluon fusion production mode is $1.66$ ${}^{+0.45}_{-0.41}{}^{+0.25}_{-0.15}$, while the signal strength for the vector boson fusion production mode is $0.26$ ${}^{+1.60}_{-0.91}{}^{+0.36}_{-0.23}$.
11  AAD 2014AR measure the cross section for ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit X}}$ , ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\mathit Z}^{*}}$ using 20.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. They give ${{\mathit \sigma}}\cdot{}{{\mathit B}}$ = $2.11$ ${}^{+0.53}_{-0.47}$ $\pm0.08$ fb in their fiducial region, where $1.30$ $\pm0.13$ fb is expected in the Standard Model for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.4 GeV. Various differential cross sections are also given, which are in agreement with the Standard Model expectations.
12  CHATRCHYAN 2014AA 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 quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.6 GeV. The signal strength for the gluon fusion and ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ production mode is $0.80$ ${}^{+0.46}_{-0.36}$, while the signal strength for the vector boson fusion and ${{\mathit W}}{{\mathit H}^{0}}$ , ${{\mathit Z}}{{\mathit H}^{0}}$ production mode is $1.7$ ${}^{+2.2}_{-2.1}$.
13  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.
14  CHATRCHYAN 2013J obtain results based on ${{\mathit Z}}$ ${{\mathit Z}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ final states in 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 12.2 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.8 GeV. Superseded by CHATRCHYAN 2014AA.
15  AAD 2012AI obtain results based on $4.7 - 4.8$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 5.8 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 $4.9 - 5.1$ fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and $5.1 - 5.3$ fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. An excess of events over background with a local significance of 5.0 $\sigma$ is observed at about ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV. The quoted signal strengths are given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.5 GeV. See also CHATRCHYAN 2012BY and CHATRCHYAN 2013Y.
References:
 AABOUD 2019N
JHEP 1904 048 Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector
 SIRUNYAN 2019AT
EPJ C79 421 Combined measurements of Higgs boson couplings in proton?proton collisions at $\sqrt{s}=13\,\text {Te}\text {V}$
 AABOUD 2018AJ
JHEP 1803 095 Measurement of the Higgs boson coupling properties in the $H\rightarrow ZZ^{*} \rightarrow 4\ell$ decay channel at $\sqrt{s}$ = 13 TeV with the ATLAS detector
 AABOUD 2018BP
PL B786 223 Constraints on off-shell Higgs boson production and the Higgs boson total width in $ZZ\to4\ell$ and $ZZ\to2\ell2\nu$ final states with the ATLAS detector
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JHEP 1604 005 Measurement of Differential and Integrated Fiducial Cross Sections for Higgs Boson Production in the Four-Lepton Decay Channel in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 and 8 TeV
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PRL 110 081803 On the Mass and Spin-Parity of the Higgs Boson Candidate via its Decays to ${{\mathit Z}}$ Boson Pairs