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Abstract: A search is performed for a massive new vector-like quark T, with charge View the MathML source, that is pair produced together with its antiparticle in proton–proton collisions. The data were collected by the CMS experiment at the Large Hadron Collider in 2012 at View the MathML source and correspond to an integrated luminosity of 19.5 fb-1. The T quark is assumed to decay into three different final states, bW, tZ, and tH. The search is carried out using events with at least one isolated lepton. No deviations from standard model expectations are observed, and lower limits are set on the T quark mass at 95% confidence level. The lower limit lies between 687 and 782 GeV for all possible values of the branching fractions into the three different final states assuming strong production. These limits are the most stringent constraints to date on the existence of such a quark.
Fuente: Physics Letters B, Vol. 729, Pp. 149–171, 2014
Editorial: Elsevier
Fecha de publicación: 01/02/2014
Nº de páginas: 23
Tipo de publicación: Artículo de Revista
DOI: 10.1016/j.physletb.2014.01.006
ISSN: 0370-2693,1873-2445
Url de la publicación: https://doi.org/10.1016/j.physletb.2014.01.006
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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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