Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at √s = 7 and 8 TeV

By G. Aad, B. Abbott, J. Abdallah, O. Abdinov, Baptiste Abeloos, R. Aben, O. AbouZeid, N. Abraham, H. Abramowicz, H. Abreu and 69 more. 2016

1,270 citations recorded by the source corpus.

Combined ATLAS and CMS measurements of the Higgs boson production and decay rates, as well as constraints on its couplings to vector bosons and fermions, are presented. The combination is based on the analysis of five production processes, namely gluon fusion, vector boson fusion, and associated production with a $W$ or a $Z$ boson or a pair of top quarks, and of the six decay modes $H \to ZZ, WW$, $\gamma\gamma, \tau\tau, bb$, and $\mu\mu$. All results are reported assuming a value of 125.09 GeV for the Higgs boson mass, the result of the combined measurement by the ATLAS and CMS experiments. The analysis uses the CERN LHC proton--proton collision data recorded by the ATLAS and CMS experiments in 2011 and 2012, corresponding to integrated luminosities per experiment of approximately 5 fb$^{-1}$ at $\sqrt{s}=7$ TeV and 20 fb$^{-1}$ at $\sqrt{s} = 8$ TeV. The Higgs boson production and decay rates measured by the two experiments are combined within the context of three generic parameterisations: two based on cross sections and branching fractions, and one on ratios of coupling modifiers. Several interpretations of the measurements with more model-dependent parameterisations are also given. The combined signal yield relative to the Standard Model prediction is measured to be 1.09 $\pm$ 0.11. The combined measurements lead to observed significances for the vector boson fusion production process and for the $H \to \tau\tau$ decay of $5.4$ and $5.5$ standard deviations, respectively. The data are consistent with the Standard Model predictions for all parameterisations considered.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4378b382f931a5958bcbeb0a50c73503f9e9bc6d

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Citations in the corpus

Top, Higgs, diboson and electroweak fit to the Standard Model effective field theory (2020, neutral): “Production: ggF , V BF , ZH, WH & ttH Decay: γγ, ZZ, W+W−, τ+τ− & bb̄ 21 [8]”
A global likelihood for precision constraints and flavour anomalies (2018, background): “Observables that are still missing include • Higgs production and decay [60,96,97] including h→ γγ [98–100], • top physics [101–104], • further low-energy observables [17], such as neutrino scattering, parity violation in atoms, and quark pair production in e+e− collisions,”
Combined SMEFT interpretation of Higgs, diboson, and top quark data from the LHC (2021, methodology): “For the LHC Run I, we take into account the inclusive measurements of Higgs boson production and decay rates from the ATLAS and CMS combination based on the full 7 and 8 TeV datasets [109].”
Combined search for electroweak production of charginos and neutralinos in proton-proton collisions at $\sqrt{s} =$ 13 TeV (2018, background): “In this paper, “H” refers to the 125 GeV scalar boson [48], interpreted as the lightest CP-even state of an extended Higgs sector.”
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector (2017, positive): “A best fit of the modified couplings, with parameters M and e, are shown that result in the SM value for M → v and e → 0 [113].”
Higgs Physics at the HL-LHC and HE-LHC (2019, methodology): “The pT H distribution is of particular interest, as potential new physics may reside in the tails of the distribution, which cannot be measured in inclusive measurements [143, 144, 145].”