Measurement of the t-channel single top quark production cross section in pp collisions at √s=7TeV
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Date
2011-08-25Author
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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Show full item recordAbstract
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.