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Measurement of the t¯t production cross section in pp collisions at √s = 7 TeV using the kinematic properties of events with leptons and jets

AutorChatrchyan, S.; Brochero Cifuentes, J. A. ; Cabrillo, I. J. ; Calderon, Alicia ; Chuang, S. H. ; Duarte Campderros, J. ; Felcini, Marta ; Fernández, M. ; Gómez, G. ; González Sánchez, J. ; Jorda, C. ; Lobelle Pardo, P. ; 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 ; Sobron Sañudo, M. ; Vila, Iván ; Vilar, Rocío ; CMS Collaboration
Fecha de publicación2011
EditorSpringer
CitaciónEuropean Physical Journal C 71(9): 1721 (2011)
ResumenA measurement of the t[`(t)]tt production cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV has been performed at the LHC with the CMS detector. The analysis uses a data sample corresponding to an integrated luminosity of 36 pb−1 and is based on the reconstruction of the final state with one isolated, high transverse-momentum electron or muon and three or more hadronic jets. The kinematic properties of the events are used to separate the t[`(t)]tt signal from W+jets and QCD multijet background events. The measured cross section is 173+39-32 (stat. + syst.)173+39−32 (stat+syst) pb, consistent with standard model expectations.
URIhttp://hdl.handle.net/10261/51995
DOI10.1140/epjc/s10052-011-1721-3Open Access
Identificadoresdoi: 10.1140/epjc/s10052-011-1721-3Open Access
issn: 1434-6044
e-issn: 1434-6052
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