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Título

Search for pair production of excited top quarks in the lepton + jets final state

AutorChatrchyan, S.; Brochero Cifuentes, J. A. ; Cabrillo, I. J. ; Calderon, Alicia; Chuang, S. H. ; Duarte Campderros, J. ; Fernández, M. ; Gómez, G. ; González Sánchez, J. ; Graziano, A. ; Jorda, C. ; López Virto, A. ; Marco, Jesús ; Marco, Rafael ; Martínez-Rivero, Celso ; Matorras, Francisco ; Muñoz Sánchez, F. J. ; Piedra, Jonatan ; Rodrigo, Teresa ; Rodríguez Marrero, Ana Y. ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío ; CMS Collaboration
Fecha de publicación2014
EditorSpringer
CitaciónJournal of High Energy Physics 6: 125 (2014)
ResumenA search is performed for pair-produced spin-3/2 excited top quarks (t*t̄*), each decaying to a top quark and a gluon. The search uses data collected with the CMS detector from pp collisions at a center-of-mass energy of √s = 8 TeV, selecting events that have a single isolated muon or electron, an imbalance in transverse momentum, and at least six jets, of which one must be compatible with originating from the fragmentation of a b quark. The data, corresponding to an integrated luminosity of 19.5 fb-1, show no significant excess over standard model predictions, and provide a lower limit of 803 GeV at 95% confidence on the mass of the spin-3/2 t* quark in an extension of the Randall-Sundrum model, assuming a 100% branching fraction of its decay into a top quark and a gluon. This is the first search for a spin-3/2 excited top quark performed at the LHC.
DescripciónOpen Access: This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).-- et al.
Versión del editorhttp://dx.doi.org/10.1007/JHEP06(2014)125
URIhttp://hdl.handle.net/10261/110202
DOI10.1007/JHEP06(2014)125
Identificadoresdoi: 10.1007/JHEP06(2014)125
e-issn: 1029-8479
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