Measurements of the top quark pair production cross section at 7TeV

Tropiano, A. (2011) Measurements of the top quark pair production cross section at 7TeV. Il nuovo cimento C, 34 (6). pp. 331-333. ISSN 1826-9885

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We present several measurements of the cross section for the production of top quark pairs in proton-proton collisions at the LHC at a centre-of-mass energy of 7TeV. We use data collected with the CMS experiment during the year 2010, and amounting to a total integrated luminosity of 36 pb−1. Measurements are presented in the lepton+jets final state, where events are selected which contain exactly one isolated, highly energetic muon or electron, and at least four jets. In addition, the di-lepton final state, which consists of two leptons, at least two jets, and significant missing transverse energy is explored. We use b-jet identification in order to increase the purity of the selection. Important backgrounds are estimated using data-driven techniques, and systematic uncertainties are estimated. The results are compared with theory predictions.

Item Type: Article
Uncontrolled Keywords: Top quarks
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 14 Apr 2020 13:31
Last Modified: 14 Apr 2020 13:31

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