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

2014-09-07Journal article Open access
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dc.contributor.authorCMS collaboration (2137 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorNguyen, Federico
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSeixas, Joao
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorMusella, Pasquale
dc.contributor.authorSilva, Pedro
dc.contributor.authorPela, Joao
dc.contributor.authorLeonardo, Nuno
dc.date.accessioned2019-02-04T03:20:48Z
dc.date.available2019-02-04T03:20:48Z
dc.date.issued2014-09-07
dc.date.updated2019-02-04T03:20:47Z
dc.description.abstractConstraints are presented on the total width of the recently discovered Higgs boson, Gamma[H], 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 inverse femtobarns at a centre-of-mass energy sqrt(s) = 7 TeV and 19.7 inverse femtobarns at sqrt(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 Gamma[H] < 22 MeV at a 95% confidence level, which is 5.4 times the expected value in the standard model at the measured mass.
dc.description.versionPeer Reviewed
dc.identifierPhys.Lett. B736 (2014) 64-85 Phys. Lett. B 736 (2014) 64; DOI 10.1016/j.physletb.2014.06.077
dc.identifier.urihttp://dx.doi.org/10.1016/j.physletb.2014.06.077
dc.identifier.urihttp://hdl.handle.net/10400.26/26583
dc.language.isoeng
dc.titleConstraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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