CERN Accelerating science

Article
Report number arXiv:1108.3699 ; CERN-PH-EP-2011-103 ; CERN-PH-EP-2011-103
Title Measurement of the top quark pair production cross section in pp collisions at s = 7 TeV in dilepton final states with ATLAS
Related titleMeasurement of the top quark pair production cross section in pp collisions at sqrt(s) = 7 TeV in dilepton final states with ATLAS
Author(s) ATLAS Collaboration  Zeige alle 3035 Autoren
Publication 2013-07-16
Imprint 19 Aug 2011
Number of pages 19
Note Comments: 9 pages (excluding author list), 3 sets of figures (10 figures in total), 3 tables
9 pages (excluding author list), 3 sets of figures (10 figures in total), 3 tables, submitted to Physics Letters B
In: Phys. Lett. B 707 (2012) 459-477
DOI 10.1016/j.physletb.2011.12.055
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 of top quark pairs (ttbar) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. Using a data sample corresponding to an integrated luminosity of 35 pb^-1, a ttbar production cross section of 171 +/- 20(stat.) +/- 14(syst.) +8-6(lum.) pb is measured for an assumed top quark mass of 172.5 GeV. A second measurement requiring at least one jet identified as coming from a b quark yields a comparable result, demonstrating that the dilepton final states are consistent with being accompanied by b-quark jets. These measurements are in good agreement with Standard Model predictions.
Copyright/License publication: © 2012-2024 CERN (License: CC-BY-3.0)
preprint: © 2011-2024 CERN (License: CC-BY-3.0)



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


 Datensatz erzeugt am 2011-08-19, letzte Änderung am 2024-03-14


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