1022 articles – 5249 Notices  [english version]
 HAL : in2p3-00754031, version 1
 arXiv : 1211.4034
 DOI : 10.1007/JHEP03(2013)004
 Journal of High Energy Physics 1303 (2013) 004
 Heavy Vector-like quark with charge 5/3 at the LHC
 (2013)
 We study the phenomenology at the Large Hadron Collider of an exotic vector-like quark X with charge +5/3. We relax the assumption of a 100% branching into W t and allow for an arbitrary rate into W plus light quarks, thus covering all possible scenarios. Sizeable decays into light quarks can be achieved, for instance, in a model where the X quark is embedded in a doublet with hypercharge 7/6, which also contains a t' quark. We study the bounds on the parameter space of this model, and perform a detailed simulation of the X pair production and decays. We show that the final state with W t W q, where q=u or c, contributes to the same sign dilepton searches, and that the reach can be improved with alternative cuts optimised on such final state.
 Thème(s) : Physique/Physique des Hautes Energies - Phénoménologie
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1211.4034
 in2p3-00754031, version 1 http://hal.in2p3.fr/in2p3-00754031 oai:hal.in2p3.fr:in2p3-00754031 Contributeur : Sylvie Florès <> Soumis le : Mardi 20 Novembre 2012, 07:34:24 Dernière modification le : Mardi 26 Mars 2013, 15:21:46