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

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URI: http://hdl.handle.net/10902/25552
ISSN: 1434-6044
ISSN: 1434-6052
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Autoría
Chatrchyan, Sergei; Brochero Cifuentes, Javier AndrésAutoridad Unican; Cabrillo Bartolomé, José IbanAutoridad Unican; Calderón Tazón, AliciaAutoridad Unican; Chuang, S. H.; Duarte Campderros, JorgeAutoridad Unican; Felcini, Marta; Fernández García, MarcosAutoridad Unican; Gómez Gramuglio, GervasioAutoridad Unican; González Sánchez, Francisco JavierAutoridad Unican; Graziano, Alberto; Jordá Lope, Clara; López Virto, María Amparo; Marco de Lucas, JesúsAutoridad Unican; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, FranciscoAutoridad Unican; Muñoz Sánchez, Francisca Javiela; Rodrigo Anoro, TeresaAutoridad Unican; [et al.]
Fecha
2013
Derechos
Atribución 3.0 España © CERN for the benefit of the CMS collaboration 2013.
Publicado en
European Physical Journal C, 2013, 74(73), 2339
Editorial
Springer New York LLC
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Resumen/Abstract
Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centre-of-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 ?+jets) and the dilepton decay channels (e+e?, ? + ? ?, and ? ±e?). The tt¯ 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 tt¯ 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.
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Atribución 3.0 España © CERN for the benefit of the CMS collaboration 2013.Excepto si se señala otra cosa, la licencia del ítem se describe como Atribución 3.0 España © CERN for the benefit of the CMS collaboration 2013.