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

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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Autoría: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Aguilo E., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V

Fuente: European Physical Journal C Vol. 74, Num. 73, Art. Num. 2339, (2013)

Editorial: Springer New York LLC

Año de publicación: 2013

Nº de páginas: 29

Tipo de publicación: Artículo de Revista

DOI: 10.1140/epjc/s10052-013-2339-4

ISSN: 1434-6044,1434-6052

Url de la publicación: https://doi.org/10.1140/epjc/s10052-013-2339-4

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