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 sqrt(s) = 7 and 8 TeV

Article, Preprint, Unknown English OPEN
Belforte, S. ; Candelise, V. ; Casarsa, M. ; Cossutti, F. ; DELLA RICCA, G. ; LA LICATA, C. ; Schizzi, A. ; Zanetti, A. ; ET AL (the ATLAS and CMS Collaborations), (2016)
  • Publisher: SISSA
  • Journal: volume 2,016, issue 8, pages 45-45 (issn: 1126-6708)
  • Related identifiers: doi: 10.1007/JHEP08(2016)045
  • Subject: associated production [top] | Higgs physics | ATLAS | ATLAS experiment | decay rate [Higgs particle] | Hadron-hadron scattering (experiments) | QC | CMS experiments | branching ratio [Higgs particle] | hep-ex | High Energy Physics - Experiment | CERN Lab | Large Hadron Collider (LHC) | 02 Physical Sciences | Nuclear & Particles Physics | Proton-proton collision | coupling [Higgs particle] | 7000 GeV-cms8000 GeV-cms | measured [decay rate] | fusion [vector boson] | fusion [gluon] | Science & Technology | Física | scattering [p p] | Particle Physics - Experiment | 01 Mathematical Sciences | CMS | measured [channel cross section] | Compact Muon Solenoid | hadroproduction [Higgs particle] | Higgs boson production | 530 | Hadron-Hadron scattering (experiments); Higgs physics | Settore ING-INF/07 - Misure Elettriche e Elettroniche | Physics | mass [Higgs particle] | CERN LHC Coll | associated production [vector boson] | Nuclear and High Energy Physics | experimental results | decay modes [Higgs particle] | CMS experiment | Hadron-Hadron scattering (experiments); Higgs physics; Nuclear and High Energy Physics | colliding beams [p p] | PARTICLE PHYSICS;LARGE HADRON COLLIDER;CMS;ATLAS | CMS collaboration ; proton-proton collisions ; Higgs physics ; Higgs boson
    • ddc: ddc:500.2 | ddc:530
    arxiv: High Energy Physics::Phenomenology | High Energy Physics::Experiment

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. 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 → ZZ, W W , γγ, ττ, bb, and μμ. 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 ± 0.11. The combined measurements lead to observed significances for the vector boson fusion production process and for the H → ττ decay of 5.4 and 5.5 standard deviations, respectively. The data are consistent with the Standard Model predictions for all parameterisations considered. 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.