Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/101675
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Type: | Journal article |
Title: | Measurement of the top quark pair production cross section in pp collisions at √s = 7 TeV in dilepton final states with ATLAS |
Other Titles: | Measurement of the top quark pair production cross section in pp collisions at root s = 7 TeV in dilepton final states with ATLAS |
Author: | Aad, G. ATLAS Collaboration, |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2012; 707(5):459-477 |
Publisher: | Elsevier |
Issue Date: | 2012 |
ISSN: | 0370-2693 1873-2445 |
Statement of Responsibility: | G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration) |
Abstract: | A measurement of the production cross section of top quark pairs (tt⁻) 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 tt⁻⁻ production cross section σtt⁻ = 177±20(stat.)±14(syst.)±7(lum.) pb is measured for an assumed top quark mass of mt = 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. |
Keywords: | Top physics; Heavy quark production; Total cross section |
Rights: | © 2011 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND license. |
DOI: | 10.1016/j.physletb.2011.12.055 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1016/j.physletb.2011.12.055 |
Appears in Collections: | Aurora harvest 7 Physics publications |
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hdl_101675.pdf | Published version | 1.19 MB | Adobe PDF | View/Open |
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