Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV

CMS;Basegmez, Suzan;Beluffi, Camille;Bruno, Giacomo;Bethani, Agni;et.al.
(2015) European Physical Journal C. Particles and Fields — Vol. C75, p. 212 (2015)

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Authors
  • CMSUCLouvain
    Author
  • Basegmez, SuzanUCLouvain
    Author
  • Beluffi, CamilleUCLouvain
    Author
  • Bruno, GiacomoUCLouvain
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  • Castello, RobertoUCLouvain
    Author
  • Caudron, AdrienUCLouvain
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  • Ceard, LudivineUCLouvain
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  • Da Silveira, Gustavo GilUCLouvain
    Author
  • Delaere, Christopheorcid-logoUCLouvain
    Author
  • Du Pree, TristanUCLouvain
    Author
  • Favart, DenisUCLouvain
    Author
  • Forthomme, LaurentUCLouvain
    Author
  • Giammanco, Andreaorcid-logoUCLouvain
    Author
  • Hollar, JonathanUCLouvain
    Author
  • Jafari, AbidehUCLouvain
    Author
  • Jez, PavelUCLouvain
    Author
  • Komm, MatthiasUCLouvain
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  • Lemaitre, VincentUCLouvain
    Author
  • Nuttens, ClaudeUCLouvain
    Author
  • Pagano, DavideUCLouvain
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  • Perrini, LuciaUCLouvain
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  • Pin, ArnaudUCLouvain
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  • Piotrzkowski, KrzysztofUCLouvain
    Author
  • Popov, AndreyUCLouvain
    Author
  • Quertenmont, LoïcUCLouvain
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  • Selvaggi, MicheleUCLouvain
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  • Vidal Maroño, MiguelUCLouvain
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  • Vizan Garcia, Jesús ManuelUCLouvain
    Author
  • Bethani, Agniorcid-logoUCLouvain
    Author
  • et. al.
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Abstract
Properties of the Higgs boson with mass near 125 GeV are measured in proton-proton collisions with the CMS experiment at the LHC. Comprehensive sets of production and decay measurements are combined. The decay channels include gamma gamma, ZZ, WW, tau tau, bb, and mu mu pairs. The data samples were collected in 2011 and 2012 and correspond to integrated luminosities of up to 5.1 inverse femtobarns at 7 TeV and up to 19.7 inverse femtobarns at 8 TeV. From the high-resolution gamma gamma and ZZ channels, the mass of the Higgs boson is determined to be 125.02 +0.26 -0.27 (stat) +0.14 -0.15 (syst) GeV. For this mass value, the event yields obtained in the different analyses tagging specific decay channels and production mechanisms are consistent with those expected for the standard model Higgs boson. The combined best-fit signal relative to the standard model expectation is 1.00 +/- 0.09 (stat) +0.08 -0.07 (theo) +/- 0.07 (syst) at the measured mass. The couplings of the Higgs boson are probed for deviations in magnitude from the standard model predictions in multiple ways, including searches for invisible and undetected decays. No significant deviations are found.
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CMS, Basegmez, S., Beluffi, C., Bruno, G., Castello, R., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Du Pree, T., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jafari, A., Jez, P., Komm, M., Lemaitre, V., Nuttens, C., et al. (2015). Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV. European Physical Journal C. Particles and Fields, C75, 212. https://doi.org/10.1140/epjc/s10052-015-3351-7 (Original work published 2015)