Observation of a new boson with mass near 125 GeV in pp collisions at √=7 and 8 TeV

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dc.contributorNational Centre for Particle and High Energy Physics
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dc.contributorVrije Universiteit Brussel
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dc.date.accessioned2014-05-27T11:30:01Z
dc.date.accessioned2022-10-05T18:55:28Z
dc.date.available2014-05-27T11:30:01Z
dc.date.available2022-10-05T18:55:28Z
dc.date.created2014-05-27T11:30:01Z
dc.date.issued2013-07-24
dc.identifierJournal of High Energy Physics, v. 2013, n. 6, 2013.
dc.identifier1126-6708
dc.identifier1029-8479
dc.identifierhttp://hdl.handle.net/11449/76042
dc.identifier10.1007/JHEP06(2013)081
dc.identifierWOS:000321381800027
dc.identifier2-s2.0-84880345266
dc.identifier2-s2.0-84880345266.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3924947
dc.description.abstractA detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample corresponds to integrated luminosities up to 5.1 fb-1 at √=7 TeV, and up to 5.3 fb-1 at √ s=8 TeV. The results for five Higgs boson decay modes γγ, ZZ, WW, ττ, and bb, which show a combined local significance of 5 standard deviations near 125 GeV, are reviewed. A fit to the invariant mass of the two high resolution channels, γγ and ZZ → 4ℓ, gives a mass estimate of 125.3 ± 0.4 (stat.) ± 0.5 (syst.) GeV. The measurements are interpreted in the context of the standard model Lagrangian for the scalar Higgs field interacting with fermions and vector bosons. The measured values of the corresponding couplings are compared to the standard model predictions. The hypothesis of custodial symmetry is tested through the measurement of the ratio of the couplings to the W and Z bosons. All the results are consistent, within their uncertainties, with the expectations for a standard model Higgs boson. [Figure not available: see fulltext.] © 2013 CERN for the benefit of the CMS collaboration.
dc.languageeng
dc.relationJournal of High Energy Physics
dc.relation5.541
dc.relation1,227
dc.relation1,227
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectHadron-Hadron Scattering
dc.titleObservation of a new boson with mass near 125 GeV in pp collisions at √=7 and 8 TeV
dc.typeArtigo


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