Measurement of the t[`(t)]\mathrm{{t\bar{t}}} production cross section in
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文摘
A measurement of the t[`(t)]\mathrm{t{\bar{t}}} production cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV has been performed at the LHC with the CMS detector. The analysis uses a data sample corresponding to an integrated luminosity of 36 pb?1 and is based on the reconstruction of the final state with one isolated, high transverse-momentum electron or muon and three or more hadronic jets. The kinematic properties of the events are used to separate the t[`(t)]\mathrm{t{\bar{t}}} signal from W+jets and QCD multijet background events. The measured cross section is 173+39-32 (stat. + syst.)173^{+39}_{-32}~(\mathrm{stat}. + \mathrm{syst}.) pb, consistent with standard model expectations.

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