2024-03-28T08:41:34Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1104472018-06-28T07:23:56Zcom_10261_37com_10261_4col_10261_290
00925njm 22002777a 4500
dc
Chatrchyan, S.
author
Brochero Cifuentes, J. A.
author
Cabrillo, I. J.
author
Calderon, Alicia
author
Duarte Campderros, J.
author
Fernández, M.
author
Gómez, G.
author
Graziano, A.
author
Jorda, C.
author
López Virto, A.
author
Marco, Jesús
author
Marco, Rafael
author
Martínez-Rivero, Celso
author
Matorras, Francisco
author
Muñoz Sánchez, F. J.
author
Piedra, Jonatan
author
Rodrigo, Teresa
author
Rodríguez Marrero, Ana Y.
author
Ruiz Jimeno, Alberto
author
Scodellaro, Luca
author
Vila, Iván
author
Vilar, Rocío
author
CMS Collaboration
author
2014
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 5.1fb -1 at a center-of-mass energy s=7TeV and 19.7fb -1 at s=8TeV. 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 < 22MeV at a 95% confidence level, which is 5.4 times the expected value in the standard model at the measured mass of mH = 125.6GeV. © 2014 Elsevier B.V.
Physics Letters B 736: 64-85 (2014)
http://hdl.handle.net/10261/110447
10.1016/j.physletb.2014.06.077
Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs