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Measurement of the t¯t production cross section in pp collisions at ?s=7 ?TeV in dilepton final states containing a ?

Abstract: The top quark pair production cross section is measured in dilepton events with one electron or muon, and one hadronically decaying ? lepton from the decay tt? ?(???)(?h??)bb? , (?=e,?). The data sample corresponds to an integrated luminosity of 2.0??fb-1 for the electron channel and 2.2??fb-1 for the muon channel, collected by the CMS detector at the LHC. This is the first measurement of the tt? cross section explicitly including ? leptons in proton-proton collisions at ?s=7??TeV. The measured value ?tt? =143±14(stat)±22(syst)±3(lumi)??pb is consistent with the standard model predictions.

Authorship: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., 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., Krammer M., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Teischinger F., Wagner P., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V., Shumei

Fuente: Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 85(11), 112007

Publisher: American Physical Society

Publication date: 01/06/2012

No. of pages: 18

Publication type: Article

DOI: 10.1103/PhysRevD.85.112007

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Publication Url: http://dx.doi.org/10.1103/PhysRevD.85.112007

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