Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10721993 | Physics Letters B | 2011 | 20 Pages |
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=7TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1±0.3pbâ1 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.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
CMS Collaboration CMS Collaboration, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl, R. Frühwirth, V.M. Ghete, J. Hammer, S. Hänsel, C. Hartl, M. Hoch, N. Hörmann, J. Hrubec, M. Weinberg,