Measurement of the tt̄ production cross section in the τ+jets channel 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
01/04/2013
|
Resumo |
The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying τ lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb-1 recorded by a dedicated multijet plus hadronically decaying τ trigger. A neural network has been developed to separate the top-quark pairs from the W+jets and multijet backgrounds. The measured value of σtt̄= 152 ± 12,(stat.) ± 32,(syst.) ±,(lum.) pb is consistent with the standard model predictions. © 2013 CERN for the benefit of the CMS collaboration. |
Formato |
1-18 |
Identificador |
http://dx.doi.org/10.1140/epjc/s10052-013-2386-x European Physical Journal C, v. 73, n. 4, p. 1-18, 2013. 1434-6044 1434-6052 http://hdl.handle.net/11449/74988 10.1140/epjc/s10052-013-2386-x WOS:000318292200022 2-s2.0-84878504500 2-s2.0-84878504500.pdf |
Idioma(s) |
eng |
Relação |
European Physical Journal C |
Direitos |
openAccess |
Tipo |
info:eu-repo/semantics/other |