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Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs

2013-02-21Artigo científico Acesso aberto
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dc.contributor.authorCMS collaboration (2211 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorNayak, Aruna
dc.contributor.authorCalpas, Betty
dc.contributor.authorAlmeida, Nuno
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorSeixas, Joao
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorMusella, Pasquale
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSilva, Pedro
dc.contributor.authorPela, Joao
dc.contributor.authorLeonardo, Nuno
dc.date.accessioned2019-02-03T22:11:49Z
dc.date.available2019-02-03T22:11:49Z
dc.date.issued2013-02-21
dc.date.updated2019-02-03T22:11:49Z
dc.description.abstractA study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17.3 inverse femtobarns, collected by the CMS experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, is used. The measured mass in the ZZ channel, where both Z bosons decay to e or mu pairs, is 126.2 +/- 0.6 (stat.) +/- 0.2 (syst.) GeV. The angular distributions of the lepton pairs in this channel are sensitive to the spin-parity of the boson. Under the assumption of spin 0, the present data are consistent with the pure scalar hypothesis, while disfavoring the pure pseudoscalar hypothesis.
dc.description.versionPeer Reviewed
dc.identifierPhys.Rev.Lett. 110 (2013) 081803; DOI 10.1103/PhysRevLett.110.081803
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.110.081803
dc.identifier.urihttp://hdl.handle.net/10400.26/26357
dc.language.isoeng
dc.titleStudy of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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LIP - AP - Física de Partículas e Astropartículas