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Search for the Standard Model Higgs boson in the decay channel $H \to ZZ^{(*)} \to 4 \ell$ with 4.8 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV with ATLAS

dc.contributor.authorATLAS collaboration (3057 authors)
dc.contributor.authorAguilar-Saavedra, Juan Antonio
dc.contributor.authorAmaral, Pedro
dc.contributor.authorAnjos, Nuno
dc.contributor.authorCarvalho, João
dc.contributor.authorCastro, Nuno Filipe
dc.contributor.authorConde Muiño, Patricia
dc.contributor.authorDo Valle Wemans, André
dc.contributor.authorFiolhais, Miguel
dc.contributor.authorGomes, Agostinho
dc.contributor.authorGonçalo, Ricardo
dc.contributor.authorJorge, Pedro
dc.contributor.authorLopes, Lourenco
dc.contributor.authorMachado Miguens, Joana
dc.contributor.authorMaio, Amélia
dc.contributor.authorManeira, José
dc.contributor.authorOliveira, Miguel Alfonso
dc.contributor.authorOnofre, António
dc.contributor.authorPalma, Alberto
dc.contributor.authorPina, João Antonio
dc.contributor.authorPinto, Belmiro
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, João
dc.contributor.authorSilva, José
dc.contributor.authorSoares, Mara
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-03T18:50:00Z
dc.date.available2019-02-03T18:50:00Z
dc.date.issued2013-07-16
dc.date.updated2019-02-03T18:49:50Z
dc.description.abstractThis Letter presents a search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->l+l-l'+l'-, where l,l'=e or mu, using proton-proton collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb^-1. The four-lepton mass distribution is compared with Standard Model background expectations to derive upper limits on the cross section of a Standard Model Higgs boson with a mass between 110 GeV and 600 GeV. The mass ranges 134-156 GeV, 182-233 GeV, 256-265 GeV and 268-415 GeV are excluded at the 95% confidence level. The largest upward deviations from the background-only hypothesis are observed for Higgs boson masses of 125, 244 and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations, respectively. Once the look-elsewhere effect is considered, none of these excesses are significant.
dc.description.versionPeer Reviewed
dc.identifierPhys.Lett. B710 (2012) 383-402; DOI 10.1016/j.physletb.2012.03.005
dc.identifier.urihttp://dx.doi.org/10.1016/j.physletb.2012.03.005
dc.identifier.urihttp://hdl.handle.net/10400.26/26092
dc.language.isoeng
dc.titleSearch for the Standard Model Higgs boson in the decay channel $H \to ZZ^{(*)} \to 4 \ell$ with 4.8 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV with ATLAS
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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