Evidence for associated production of a single top quark and W Boson 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
11/01/2013
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Resumo |
Evidence is presented for the associated production of a single top quark and W boson in pp collisions at √s=7 TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 4.9 fb -1. The measurement is performed using events with two leptons and a jet originated from a b quark. A multivariate analysis based on kinematic properties is utilized to separate the tt̄ background from the signal. The observed signal has a significance of 4.0σ and corresponds to a cross section of 16-4+5 pb, in agreement with the standard model expectation of 15.6±0.4-1.2+1.0 pb. © 2013 CERN, for the CMS Collaboration Published by the American Physical Society under the terms of the http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
Identificador |
http://dx.doi.org/10.1103/PhysRevLett.110.022003 Physical Review Letters, v. 110, n. 2, 2013. 0031-9007 1079-7114 http://hdl.handle.net/11449/74373 10.1103/PhysRevLett.110.022003 WOS:000313422000006 2-s2.0-84872228579 2-s2.0-84872228579.pdf |
Idioma(s) |
eng |
Relação |
Physical Review Letters |
Direitos |
closedAccess |
Palavras-Chave | #Integrated luminosity #Kinematic properties #Multi variate analysis #The standard model #Bosons #Tellurium compounds #High energy physics |
Tipo |
info:eu-repo/semantics/article |