Measurements of the Higgs boson production cross section and couplings in the W boson pair decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
Eur.Phys.J.C 83 (2023) 667, 2023.

Abstract
Production cross sections of the standard model Higgs boson decaying to a pair of W bosons are measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis targets Higgs bosons produced via gluon fusion, vector boson fusion, and in association with a W or Z boson. Candidate events are required to have at least two charged leptons and moderate missing transverse momentum, targeting events with at least one leptonically decaying W boson originating from the Higgs boson. Results are presented in the form of inclusive and differential cross sections in the simplified template cross section framework, as well as couplings of the Higgs boson to vector bosons and fermions. The data set collected by the CMS detector during 2016-2018 is used, corresponding to an integrated luminosity of 138 fb$^{-1}$. The signal strength modifier $\mu$, defined as the ratio of the observed production rate in a given decay channel to the standard model expectation, is measured to be $\mu$ = 0.95 $^{+0.10}_{-0.09}$. All results are found to be compatible with the standard model within the uncertainties.

  • Inclusive signal strenght modifiers

    Data from Figure 23

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    Results of likelihood scans for the signal strength modifiers corresponding to the four main SM H boson production mechanisms. The...

  • Inclusive signal strength correlation matrix

    Data from Figure 24

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    Correlation matrix of the signal strength modifiers corresponding to the four main SM H boson production mechanisms.

  • Likelihood scan for overall signal strength

    Data from Figure 22

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    Profile likelihood as a function of the overall HWW signal strength modifier, considering all uncertainties

  • Likelihood scan (stat. unc.) for overall signal strength

    Data from Figure 22

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    Profile likelihood as a function of the overall HWW signal strength modifier, considering statistical uncertainties only

  • 2D likelihood scan for kappas

    Data from figure 25

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    2D likelihood profile as a function of kappa_v and kappa_f

  • STXS signal strenght modifiers and cross sections

    Data from figure 26

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    The measured product of cross section times branching fraction for HWW decay and the SM predictions for the merged Stage...

  • STXS signal strength correlation matrix

    Data from Figure 27

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    Correlation matrix of the signal strength modifiers corresponding to the Stage 1.2 STXS production bins at mH = 125.38 GeV.

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