Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5304
Title: Observation of a new boson with mass near 125 GeV in pp collisions at ?=7 and 8 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Higgs boson
Proton proton collisions
Energy scale
Issue Date: 2013
Publisher: Springer Verlag
Source: Chatrchyan, S, Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., ...CMS Collaboration (2013). Observation of a new boson with mass near 125 GeV in pp collisions at √=7 and 8 TeV. Journal of High Energy Physics, 2013(6). doi:10.1007/JHEP06(2013)081
Abstract: A 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.
URI: http://doi.org/10.1007/JHEP06(2013)081
http://hdl.handle.net/11147/5304
ISSN: 1029-8479
1029-8479
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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