Search for Z′ resonances decaying to tt̄ in dilepton+jets final states in pp collisions at √s=7 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
03/04/2013
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Resumo |
A search for resonances decaying to top quark-antiquark pairs is performed using a dilepton+jets data sample recorded by the CMS experiment at the LHC in pp collisions at √s=7 TeV corresponding to an integrated luminosity of 5.0 fb-1. No significant deviations from the standard model background are observed. Upper limits are presented for the production cross section times branching fraction of top quark-antiquark resonances for masses from 750 to 3000 GeV. In particular, the existence of a leptophobic topcolor particle Z′ is excluded at the 95% confidence level for resonance masses MZ ′<1.3 TeV for ΓZ′=0.012MZ ′, and M<1.9 TeV for ΓZ′=0.10MZ ′. © 2013 CERN. |
Identificador |
http://dx.doi.org/10.1103/PhysRevD.87.072002 Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 87, n. 7, 2013. 1550-7998 1550-2368 http://hdl.handle.net/11449/75058 10.1103/PhysRevD.87.072002 WOS:000317101200001 2-s2.0-84876193616 2-s2.0-84876193616.pdf |
Idioma(s) |
eng |
Relação |
Physical Review D: Particles, Fields, Gravitation and Cosmology |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |