6533b834fe1ef96bd129ddc1

RESEARCH PRODUCT

Search for doubly charged Higgs bosons in like-sign dilepton final states at root s=7 TeV with the ATLAS detector

Atlas CollaborationSusana Cabrera UrbánMaría Victoria Castillo GiménezMaría José Costa MezquitaFarida FassiAntonio Ferrer SoriaLuca FioriniJuan A. Fuster VerdúCarmen García GarcíaJosé Enrique García NavarroSantiago González De La HozYesenia Hernández JiménezEmilio Higón RodríguezAdrián Irles QuilesMohammed KaciCarlos Lacasta LlácerVicente Lacuesta MiquelLuis March RuizSalvador Martí GarcíaMercedes Miñano MoyaVasiliki MitsouRegina Moles VallsMaría Moreno LlácerElena Oliver GarcíaSebastián Pedraza LópezMaría Teresa Pérez García-estañE. Romero AdamEduardo Ros MartínezJosé Salt CairolsVictoria Sánchez MartínezCarlos Antonio Solans SánchezU. SoldevilaJavier Sánchez MartínezEmma Torró PastorAlberto Valero BiotE. Valladolid GallegoJuan Antonio Valls FerrerMiguel Villaplana PérezMarcel Vos

subject

High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclear

description

A search for doubly charged Higgs bosons decaying to pairs of electrons and/or muons is presented. The search is performed using a data sample corresponding to an integrated luminosity of 4.7 fb(-1) of pp collisions at root s = 7 TeV collected by the ATLAS detector at the LHC. Pairs of prompt, isolated, high-p(T) leptons with the same electric charge (e(+/-)e(+/-), e(+/-)mu, mu(+/-)mu(+/-)) are selected, and their invariant mass distribution is searched for a narrow resonance. No significant excess over Standard Model background expectations is observed, and limits are placed on the cross section times branching ratio for pair production of doubly charged Higgs bosons. The masses of doubly charged Higgs bosons are constrained depending on the branching ratio into these leptonic final states. Assuming pair production, coupling to left-handed fermions, and a branching ratio of 100% for each final state, masses below 409 GeV, 375 GeV, and 398 GeV are excluded for e(+/-)e(+/-), e(+/-)mu(+/-),and mu(+/-)mu(+/-), respectively.

http://hdl.handle.net/10550/37900