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https://hdl.handle.net/2440/101687
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Type: | Journal article |
Title: | Measurement of the cross-section for b-jets produced in association with a Z boson at √ s = 7 TeV with the ATLAS detector |
Other Titles: | Measurement of the cross-section for b-jets produced in association with a Z boson at root s = 7 TeV with the ATLAS detector |
Author: | Aad, G. ATLAS Collaboration, |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2012; 706(4-5):295-313 |
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 is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of √ s = 7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately 36 pb⁻¹. The event selection requires a Z boson decaying into high pT electrons or muons, and at least one b-jet, identified by its displaced vertex, with transverse momentum pT > 25 GeV and rapidity |y| < 2.1. After subtraction of background processes, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found to be in good agreement with perturbative QCD predictions at next-to-leading order. |
Keywords: | standard Model; Z boson; b-Jet; Cross-section |
Rights: | © 2011 CERN. Published by Elsevier B.V. Open access under CC BY-NC-NC license [https://creativecommons.org/licenses/by-nc-nd/4.0/]. |
DOI: | 10.1016/j.physletb.2011.11.059 |
Published version: | http://elsevier/ |
Appears in Collections: | Aurora harvest 3 Physics publications |
Files in This Item:
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hdl_101687.pdf | Published version | 1.07 MB | Adobe PDF | View/Open |
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