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Article
Report number arXiv:1201.1889 ; CERN-PH-EP-2011-201 ; CERN-PH-EP-2011-201
Title Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel
Related titleMeasurement of the top quark pair production cross-section with ATLAS in the single lepton channel
Author(s) ATLAS Collaboration  Show all 3006 authors
Publication 2013-07-16
Imprint 10 Jan 2012
Number of pages 20
Note Comments: 9 pages plus author list (20 pages total), 6 figures, 2 tables, submitted to Physics Letter B
10 pages plus author list (21 pages total), 6 figures, 2 tables, revised author list, matches published version in Physics Letter B
In: Phys. Lett. B 711 (2012) 244-263
DOI 10.1016/j.physletb.2012.03.083
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords QCD ; top physics ; experimental results
Abstract A measurement of the production cross-section for top quark pairs (tt¯) in pp collisions at s = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35 ipb, two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of σtt¯=187±11(stat.)17+18(syst.)±6 (lumi.) pb and σtt¯=173±17(stat.)16+18(syst.)±6 (lumi.) pb respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter.
Copyright/License preprint: © 2012-2024 CERN (License: Open Access)
publication: © 2012-2024 CERN (License: Open Access)



Corresponding record in: Inspire
Email contact: klaus.moenig@cern.ch


 Záznam vytvorený 2012-01-10, zmenený 2024-03-14


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