Publication: Limits on the Higgs boson lifetime and width from its decay to four charged leptons
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American Physical Society (APS)
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Abstract
Constraints on the lifetime and width of the Higgs boson are obtained from H to ZZ to 4 lepton events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7 inverse femtobarns at a center-of-mass energy of 7 and 8 TeV, respectively. The measurement of the Higgs boson lifetime is derived from its flight distance in the CMS detector with an upper bound of tau[H] < 1.9E-13 s at the 95% confidence level (CL), corresponding to a lower bound on the width of Gamma[H] > 3.5E-9 MeV. The measurement of the width is obtained from an off-shell production technique, generalized to include anomalous couplings of the Higgs boson to two electroweak bosons. From this measurement, a joint constraint is set on the Higgs boson width and a parameter f[LQ] that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is Gamma[H] < 46 MeV with f[LQ] unconstrained and Gamma[H] < 26 MeV for f[LQ] = 0 at the 95% CL. The constraint f[LQ] < 3.8E-3 at the 95% CL is obtained for the expected standard model Higgs boson width.
Submitted to Phys. Rev. D. Published version
Submitted to Phys. Rev. D. Published version
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Standard Model, Higgs particle: width, lepton, Non disponibile, ATLAS DETECTOR, GeV-cms8000 GeV-cms, Physics, Particles & Fields, High Energy Physics - Experiment, ЭБ БГУ::ТЕХНИЧЕСКИЕ И ПРИКЛАДНЫЕ НАУКИ. ОТРАСЛИ ЭКОНОМИКИ::Ядерная техника, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Z0: pair production, Final-States, info:eu-repo/classification/ddc/530, High energy physics, Experimental particle physics, LHC, CMS, Standard Model, [Anahtar Kelime Yok], CMS, Nuclear and High Energy Physics, Symmetries, Physics, ddc:530, Z0 --> lepton+ lepton-, Nuclear & Particles Physics, CERN LHC Coll, ATLAS DETECTOR, FINAL-STATES, LHC, SYMMETRIES, MODEL, MASS, Physical Sciences, Physique des particules élémentaires, SYMMETRIES, PARTICLE PHYSICS, Lhc, LHC, Atlas Detector, Symmetries, Nuclear and High Energy Physics, p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics, Atlas detector, Particles & Fields, FOS: Physical sciences, Physics Institute, Fizik, Astronomy & Astrophysics, MASS, off-shell, Atomic, Molecular, Nuclear, Particle And Plasma Physics, Final-states, Nuclear, Nuclear and High Energy Physics, High energy physics, coupling: anomaly, Higgs particle --> 2Z0, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, Quantum Physics, Science & Technology, Higgs particle: coupling, electroweak interaction, PARTICLE PHYSICS, LARGE HADRON COLLIDER, CMS, FISICA DELLE PARTICELLE, Molecular, Física, Mass, LARGE HADRON COLLIDER, FINAL-STATES, MODEL, Astronomical And Space Sciences, Physics and Astronomy, QC Physics / fizika, Atomic, Particle And Plasma Physics, Z0: leptonic decay, Higgs particle: lifetime, Experimental particle physics, p p: colliding beams, Model, experimental results