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Higgs boson production cross-section measurements and their EFT interpretation in the $4\ell$ decay channel at $\sqrt{s}=$13 TeV with the ATLAS detector

The collaboration
Eur.Phys.J.C 80 (2020) 957, 2020.

Abstract (data abstract)
Higgs boson properties are studied in the four-lepton decay channel (where lepton = $e$, $\mu$) using 139 fb$^{-1}$ of proton--proton collision data recorded at $\sqrt{s}$=13 TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive cross-section times branching ratio for $H\to ZZ^*$ decay is measured to be $1.34 \pm 0.12$ pb for a Higgs boson with absolute rapidity below 2.5, in good agreement with the Standard Model prediction of $1.33 \pm 0.08$ pb. Cross-sections times branching ratio are measured for the main Higgs boson production modes in several exclusive phase-space regions. The measurements are interpreted in terms of coupling modifiers and of the tensor structure of Higgs boson interactions using an effective field theory approach. Exclusion limits are set on the CP-even and CP-odd 'beyond the Standard Model' couplings of the Higgs boson to vector bosons, gluons and top quarks.

• #### Table 04 - Yields Higgs Production Mode

Data from Table 04

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The expected number of SM Higgs boson events with a mass $m_{H}$= 125 GeV for an integrated luminosity of 139...

• #### Table 06 - Uncertainties

Data from Table 06

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The impact of the dominant systematic uncertainties (in percent) on the cross-sections in production bins of the Production Mode Stage...

• #### Figure 05 - Distribution $m_{4l}$

Data from Figure 05

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The expected and the observed (post-fit) the four-lepton invariant mass distribution for the selected Higgs boson candidates, shown for an...

• #### Table 07 - Yields Results

Data from Table 07

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The expected (pre-fit) and observed numbers of events for an integrated luminosity of 139 fb$^{-1}$ at $\sqrt{s}$=13 TeV in the...

• #### Figure 06a - Distribution $N_{jets}$

Data from Figure 06a

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The expected and the observed (post-fit) the jet multiplicity distribution after the inclusive event selection for an integrated luminosity of...

• #### Figure 06b - Distribution $p_{T}^{4l}$ with $N_{jets}$=0

Data from Figure 06b

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The expected and the observed (post-fit) the four-lepton transverse momentum distribution for events with zero jets, after the inclusive event...

• #### Figure 06c - Distribution $p_{T}^{4l}$ with $N_{jets}$=1

Data from Figure 06c

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The expected and the observed (post-fit) the four-lepton transverse momentum distribution for events with one jet, after the inclusive event...

• #### Figure 06d - Distribution $p_{T}^{4l}$ with $N_{jets}\ge$2

Data from Figure 06d

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The expected and the observed (post-fit) the four-lepton transverse momentum distribution for events with at least two jets, after the...

• #### Figure 06e - Distribution $m_{jj}$ with $N_{jets}\ge$2

Data from Figure 06e

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The expected and the observed (post-fit) the dijet invariant mass distribution for events with at least two jets, after the...

• #### Figure 07a - Distribution $NN_{ggF}$ in 0$j$-$p_{T}^{4l}$-Low

Data from Figure 07a

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The expected and the observed $NN_{ggF}$ output (post-fit) distribution in 0$j$-$p_{T}^{4l}$-Low category for an integrated luminosity of 139fb$^{-1}$ at $\sqrt{s}$=13TeV....

• #### Figure 07b - Distribution $NN_{ggF}$ in 0$j$-$p_{T}^{4l}$-Med

Data from Figure 07b

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The expected and the observed $NN_{ggF}$ output (post-fit) distribution in 0$j$-$p_{T}^{4l}$-Med category for an integrated luminosity of 139fb$^{-1}$ at $\sqrt{s}$=13TeV....

• #### Figure 07c - Distribution $NN_{VBF}$ in 1$j$-$p_{T}^{4l}$-Low

Data from Figure 07c

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The expected and the observed $NN_{VBF}$ output (post-fit) distribution in 1$j$-$p_{T}^{4l}$-Low category with $NN_{ZZ}$<0.25 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 07d - Distribution $NN_{ZZ}$ in 1$j$-$p_{T}^{4l}$-Low

Data from Figure 07d

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The expected and the observed $NN_{ZZ}$ output (post-fit) distribution in 1$j$-$p_{T}^{4l}$-Low category with $NN_{ZZ}$>0.25 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 07e - Distribution $NN_{VBF}$ in 1$j$-$p_{T}^{4l}$-Med

Data from Figure 07e

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The expected and the observed $NN_{VBF}$ output (post-fit) distribution in 1$j$-$p_{T}^{4l}$-Med category with $NN_{ZZ}$<0.25 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 07f - Distribution $NN_{ZZ}$ in 1$j$-$p_{T}^{4l}$-Med

Data from Figure 07f

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The expected and the observed $NN_{ZZ}$ output (post-fit) distribution in 1$j$-$p_{T}^{4l}$-Med category with $NN_{ZZ}$>0.25 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 07g - Distribution $NN_{VBF}$ in 1$j$-$p_{T}^{4l}$-High

Data from Figure 07g

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The expected and the observed $NN_{VBF}$ output (post-fit) distribution in 1$j$-$p_{T}^{4l}$-High category for an integrated luminosity of 139fb$^{-1}$ at $\sqrt{s}$=13TeV....

• #### Figure 08a - Distribution $NN_{VBF}$ in 2$j$

Data from Figure 08a

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The expected and the observed $NN_{VBF}$ output (post-fit) distribution in 2$j$ category with $NN_{VH}$<0.2 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 08b - Distribution $NN_{VH}$ in 2$j$

Data from Figure 08b

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The expected and the observed $NN_{VH}$ output (post-fit) distribution in 2$j$ category with $NN_{VH}$>0.2 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 08c - Distribution $NN_{VBF}$ in 2$j$-BSM

Data from Figure 08c

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The expected and the observed $NN_{VBF}$ output (post-fit) distribution in 2$j$-BSM-like category for an integrated luminosity of 139fb$^{-1}$ at $\sqrt{s}$=13TeV....

• #### Figure 08d - Distribution $NN_{ttH}$ in $ttH$-Had

Data from Figure 08d

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The expected and the observed $NN_{ttH}$ output (post-fit) distribution in $ttH$-Had-enriched category with $NN_{tXX}$<0.4 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 08e - Distribution $NN_{tXX}$ in $ttH$-Had

Data from Figure 08e

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The expected and the observed $NN_{tXX}$ output (post-fit) distribution in $ttH$-Had-enriched category with $NN_{tXX}$>0.4 for an integrated luminosity of 139fb$^{-1}$...

• #### Figure 08f - Distribution $NN_{ttH}$ in $VH$-Lep

Data from Figure 08f

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The expected and the observed $NN_{ttH}$ output (post-fit) distribution in $VH$-Lep-enriched category for an integrated luminosity of 139fb$^{-1}$ at $\sqrt{s}$=13TeV....

• #### Figure 08g - Categories without NN

Data from Figure 08g

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The expected and the observed events in the categories where no NN discriminant is used for an integrated luminosity of...

• #### Figure 08h - Sidebands

Data from Figure 08h

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The expected and the observed events in the side bands used to constraint the $ZZ^{*}$ and $tXX$ backgrounds for an...

• #### Table 08 - STXS Results

Data from Table 08

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