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Título

Measurement of differential top-quark-pair production cross sections in pp collisions at √s = 7 TeV

Autor Chatrchyan, 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. ; Graziano, A. ; Jorda, C. ; López Virto, A. ; Marco, Jesús ; Marco, Rafael ; Martínez-Rivero, Celso ; Matorras, Francisco ; Muñoz Sánchez, F. J. ; Rodrigo, Teresa ; Rodríguez Marrero, Ana Y. ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío ; CMS Collaboration
Fecha de publicación 2013
EditorSpringer
Citación European Physical Journal C 73: 2339 (2013)
ResumenNormalised differential top-quark-pair production cross sections are measured in pp collisions at a centreof-mass energy of 7 TeVat the LHC with the CMS detector using data recorded in 2011 corresponding to an integrated luminosity of 5.0 fb−1. The measurements are performed in the lepton + jets decay channels (e + jets and μ + jets) and the dilepton decay channels (e+e−, μ+μ−, and μ±e∓). The t¯t differential cross section is measured as a function of kinematic properties of the final-state charged leptons and jets associated to b quarks, as well as those of the top quarks and the t¯t system. The data are compared with several predictions from perturbative QCD calculations up to approximate next-to-next-to-leading-order precision. No significant deviations from the standard model are observed.
Descripción Open Access: This article is distributed under the terms of the Creative Commons Attribution License.-- et al.
Versión del editorhttp://dx.doi.org/10.1140/epjc/s10052-013-2339-4
URI http://hdl.handle.net/10261/109351
DOI10.1140/epjc/s10052-013-2339-4
Identificadoresdoi: 10.1140/epjc/s10052-013-2339-4
e-issn: 1434-6052
issn: 1434-6044
Aparece en las colecciones: (IFCA) Artículos
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