# Measurement of the t¯t production cross section in pp collisions at √s = 7 TeV using the kinematic properties of events with leptons and jets

CMS Collaboration; Amsler, C; Chiochia, V; Snoek, H; Favaro, C; Verzetti, M; Schmitt, A; De Visscher, S; Otyugova, P; Millan, B; Ivova, M; Storey, J; Aguiló, E (2011). Measurement of the t¯t production cross section in pp collisions at √s = 7 TeV using the kinematic properties of events with leptons and jets. European Physical Journal C - Particles and Fields, 71(9):1721.

## Abstract

A measurement of the tt 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 tt signal from W+jets and QCD multijet background events. The measured cross section is 173+39−32 (stat+syst) pb, consistent with standard model expectations.

## Abstract

A measurement of the tt 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 tt signal from W+jets and QCD multijet background events. The measured cross section is 173+39−32 (stat+syst) pb, consistent with standard model expectations.

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Other titles: Measurement of the top-antitop production cross section in pp collisions at sqrt(s)=7 TeV using the kinematic properties of events with leptons and jets Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics Physical Sciences > Engineering (miscellaneous) Physical Sciences > Physics and Astronomy (miscellaneous) English 2011 17 Feb 2012 15:12 30 Jul 2020 04:20 Springer 1434-6044 (P) 1434-6052 (E) The original publication is available at www.springerlink.com Hybrid https://doi.org/10.1140/epjc/s10052-011-1721-3 http://arxiv.org/abs/1106.0902