Search for standard model production of four top quarks in the lepton plus jets channel in pp collisions at root S=8 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
03/11/2015
03/11/2015
27/11/2014
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Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) A search is presented for standard model (SM) production of four top quarks (WO in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb(-1) recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC. The expected cross section for SM t (t) over bart (t) over bar production is sigma(SM)(t ($t) over bart (t) over bar) approximate to 1 fb. A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. The data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a 95% confidence level on the cross section for producing four top quarks in the SM, where a limit of 32 + 17 fb is expected. |
Formato |
31 |
Identificador |
http://link.springer.com/article/10.1007%2FJHEP11%282014%29154 Journal Of High Energy Physics. New York: Springer, n. 11, 31 p., 2014. 1029-8479 http://hdl.handle.net/11449/130275 http://dx.doi.org/10.1007/JHEP11(2014)154 WOS:000347909500004 WOS000347909500004.pdf |
Idioma(s) |
eng |
Publicador |
Springer |
Relação |
Journal Of High Energy Physics |
Direitos |
openAccess |
Palavras-Chave | #Hadron-Hadron Scattering #Top physics |
Tipo |
info:eu-repo/semantics/article |