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Constraints on the Higgs boson width from off- shell production and decay to Z-boson pairs (CROSBI ID 213565)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Khachatryan, V. ; ... ; Pleština, Roko ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko et al. Constraints on the Higgs boson width from off- shell production and decay to Z-boson pairs // Physics letters. B, 736 (2014), 64-85. doi: 10.1016/j.physletb.2014.06.077

Podaci o odgovornosti

Khachatryan, V. ; ... ; Pleština, Roko ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Morović, Srećko ; Sudić, Lucija ; ... ; Đurić, Senka ; ... ; Woods, N.

engleski

Constraints on the Higgs boson width from off- shell production and decay to Z-boson pairs

Constraints are presented on the total width of the recently discovered Higgs boson, ΓH, using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an electron or muon pair, and the other to an electron, muon, or neutrino pair. The analysis is based on the data collected by the CMS experiment at the LHC in 2011 and 2012, corresponding to integrated luminosities of 5.1 fb−1 at a center- of-mass energy √s = 7 TeV and 19.7 fb−1 at √s = 8 TeV. A simultaneous maximum likelihood fit to the measured kinematic distributions near the resonance peak and above the Z-boson pair production threshold leads to an upper limit on the Higgs boson width of ΓH < 22 MeV at a 95% confidence level, which is 5.4 times the expected value in the standard model at the measured mass of mH = 125.6 GeV.

CMS; physics; Higgs; diboson; properties

CMS Collaboration.

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Podaci o izdanju

736

2014.

64-85

objavljeno

0370-2693

10.1016/j.physletb.2014.06.077

Povezanost rada

Fizika

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