Cargando…

Observation of a Higgs-like Boson in CMS at the LHC

After decades of pursuit at lepton and hadron colliders around the world, a Higgs-like boson has been observed at the Large Hadron Collider (LHC). We present results of searches by the CMS collaboration for the production of the standard model Higgs boson in proton-proton collisions, using data sam...

Descripción completa

Detalles Bibliográficos
Autor principal: Bhat, Pushpalatha
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1496497
_version_ 1780926654363729920
author Bhat, Pushpalatha
author_facet Bhat, Pushpalatha
author_sort Bhat, Pushpalatha
collection CERN
description After decades of pursuit at lepton and hadron colliders around the world, a Higgs-like boson has been observed at the Large Hadron Collider (LHC). We present results of searches by the CMS collaboration for the production of the standard model Higgs boson in proton-proton collisions, using data samples corresponding to integrated luminosities of 5.1 fb$^{-1}$ at $\sqrt{s}$ = 7~TeV and 5.3 fb$^{-1}$ at $\sqrt{s}$ = 8~TeV. The searches have been performed in five Higgs decay modes, $\mathrm{\gamma\gamma}$, ZZ, WW, $\mathrm{\tau^+\tau^-}$, and $\mathrm{b\bar{b}}$, in the mass range from 110 up to 160 GeV. Multivariate methods have been used in many aspects of the analyses to extract optimal results. An excess of events has been observed above the expected background, with a significance of 5.0 standard deviations. Most of the excess is in the high resolution $\mathrm{\gamma\gamma}$ and ZZ decay modes. A fit to the signal in these modes yields a mass for the boson of 125.3$\pm$0.4(stat.)$\pm$0.5(syst.)~GeV. Since the new boson decays into two photons, its spin can be inferred to be different from one.
id cern-1496497
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14964972019-09-30T06:29:59Zhttp://cds.cern.ch/record/1496497engBhat, PushpalathaObservation of a Higgs-like Boson in CMS at the LHCDetectors and Experimental TechniquesAfter decades of pursuit at lepton and hadron colliders around the world, a Higgs-like boson has been observed at the Large Hadron Collider (LHC). We present results of searches by the CMS collaboration for the production of the standard model Higgs boson in proton-proton collisions, using data samples corresponding to integrated luminosities of 5.1 fb$^{-1}$ at $\sqrt{s}$ = 7~TeV and 5.3 fb$^{-1}$ at $\sqrt{s}$ = 8~TeV. The searches have been performed in five Higgs decay modes, $\mathrm{\gamma\gamma}$, ZZ, WW, $\mathrm{\tau^+\tau^-}$, and $\mathrm{b\bar{b}}$, in the mass range from 110 up to 160 GeV. Multivariate methods have been used in many aspects of the analyses to extract optimal results. An excess of events has been observed above the expected background, with a significance of 5.0 standard deviations. Most of the excess is in the high resolution $\mathrm{\gamma\gamma}$ and ZZ decay modes. A fit to the signal in these modes yields a mass for the boson of 125.3$\pm$0.4(stat.)$\pm$0.5(syst.)~GeV. Since the new boson decays into two photons, its spin can be inferred to be different from one.CMS-CR-2012-248oai:cds.cern.ch:14964972012-10-03
spellingShingle Detectors and Experimental Techniques
Bhat, Pushpalatha
Observation of a Higgs-like Boson in CMS at the LHC
title Observation of a Higgs-like Boson in CMS at the LHC
title_full Observation of a Higgs-like Boson in CMS at the LHC
title_fullStr Observation of a Higgs-like Boson in CMS at the LHC
title_full_unstemmed Observation of a Higgs-like Boson in CMS at the LHC
title_short Observation of a Higgs-like Boson in CMS at the LHC
title_sort observation of a higgs-like boson in cms at the lhc
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1496497
work_keys_str_mv AT bhatpushpalatha observationofahiggslikebosonincmsatthelhc