Measurement of differential top-quark pair production cross sections in pp colisions at sqrt(s) = 7 TeV

Abstract : Normalised differential top-quark pair production cross sections are measured in pp collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector using data recorded in 2011 corresponding to an integrated luminosity of 5.0 inverse femtobarns. The measurements are performed in the lepton+jets decay channels (e+jets and mu+jets) and the dilepton decay channels (oppositely charged ee, mu mu, and e mu). The t t-bar 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-bar 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.
docType_s : Journal articles
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http://hal.in2p3.fr/in2p3-00750661
Contributor : Florès Sylvie <>
Submitted on : Monday, November 12, 2012 - 7:00:57 AM
Last modification on : Monday, November 12, 2012 - 7:00:57 AM

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S. Chatrchyan, M. Besançon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Measurement of differential top-quark pair production cross sections in pp colisions at sqrt(s) = 7 TeV. European Physical Journal C: Particles and Fields, EDP Sciences: EPJ, 2013, 73, pp.2339. <10.1140/epjc/s10052-013-2339-4>. <in2p3-00750661>

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