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    Measurement of the t-channel single top quark production cross section in pp collisions at √s=7TeV

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    Date
    2011-08-25
    Author
    Chatrchyan, S. A.
    Khachatryan, Vardan
    Sirunyan, A. M.
    Baarmand, Marc M.
    Dorney, B.
    Guragain, Samir
    Hohlmann, Marcus
    Kalakhety, H.
    Ralich, Robert M.
    Vodopiyanov, Igor B.
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    Abstract
    Electroweak production of the top quark is measured for the first time in pp collisions at ffiffi s p ¼ 7 TeV, using a data set collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb 1. With an event selection optimized for t-channel production, two complementary analyses are performed. The first one exploits the special angular properties of the signal, together with background estimates from the data. The second approach uses a multivariate analysis technique to probe the compatibility with signal topology expected from electroweak top-quark production. The combined measurement of the cross section is 83:6 29:8ðstat þ systÞ 3:3ðlumiÞ pb, consistent with the standard model expectation.
    URI
    http://hdl.handle.net/11141/2279
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