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Abstract: Results are reported from a search for supersymmetry in pp collisions at a center-of-mass energy of 8 TeV, based on events with a single isolated lepton (electron or muon) and multiple jets, at least two of which are identified as b jets. The data sample corresponds to an integrated luminosity of 19.3 fb-1recorded by the CMS experiment at the LHC in 2012. The search is motivated by supersymmetric models that involve strong-production processes and cascade decays of new particles. The resulting final states contain multiple jets as well as missing transverse momentum from weakly interacting particles. The event yields, observed across several kinematic regions, are consistent with the expectations from standard model processes. The results are interpreted in the context of simplified supersymmetric scenarios with pair production of gluinos, where each gluino decays to a top quark–antiquark pair and the lightest neutralino. For the case of decays via virtual top squarks, gluinos with a mass smaller than 1.26 TeV are excluded for low neutralino masses.
Fuente: Physics Letters B, Vol. 733, Pp. 328–353, (2014)
Publisher: Elsevier
Publication date: 01/06/2014
No. of pages: 26
Publication type: Artículo de Revista
DOI: 10.1016/j.physletb.2014.04.023
ISSN: 0370-2693,1873-2445
Spanish project: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01
Publication Url: https://doi.org/10.1016/j.physletb.2014.04.023
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CHATRCHYAN, SERGUEI
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
SHANHUEI CHUANG
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
GERVASIO GOMEZ GRAMUGLIO
FRANCISCO JAVIER GONZALEZ SANCHEZ
ALBERTO GRAZIANO
MARIA AMPARO LOPEZ VIRTO
JESUS MARCO DE LUCAS
RAFAEL JOSE MARCO DE LUCAS
CELSO MARTINEZ RIVERO
FRANCISCO MATORRAS WEINIG
FRANCISCA JAVIELA MUÑOZ SANCHEZ
JONATAN PIEDRA GOMEZ
MARIA TERESA RODRIGO ANORO
ANA YAIZA RODRIGUEZ MARRERO
ALBERTO RUIZ JIMENO
LUCA SCODELLARO
IVAN VILA ALVAREZ
ROCIO VILAR CORTABITARTE
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