First measurement of the cross section for top-quark pair production in proton-proton collisions at √s=7 TeV

Khachatryan, V. ; Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Bergauer, T. ; Mondal, N. K. ; et., al (2011) First measurement of the cross section for top-quark pair production in proton-proton collisions at √s=7 TeV Physics Letters B, 695 (5). pp. 424-443. ISSN 0370-2693

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.physletb.2010.11.058

Abstract

The first measurement of the cross section for top-quark pair production in pp collisions at the Large Hadron Collider at center-of-mass energy √s=7 TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1±0.3 pb-1 recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from Drell-Yan and non-W/Z boson production are estimated from data. Eleven events are observed in the data with 2.1±1.0 events expected from background. The measured cross section is 194±72(stat.)±24(syst.)±21(lumi.) pb, consistent with next-to-leading order predictions.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:CMS; LHC; Physics; Top Quark; Cross Section
ID Code:88124
Deposited On:27 Mar 2012 08:21
Last Modified:27 Mar 2012 08:21

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