Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/101686
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Type: Journal article
Title: Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at √ s = 7 TeV with the ATLAS detector
Other Titles: Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at root s = 7 TeV with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 2012; 707(5):418-437
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 cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at √s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb⁻¹ of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the antikt clustering algorithm with transverse momentum above 25 GeV and rapidity within ±2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 ± 1.9(stat) ± 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value.
Rights: © 2011 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND license.
DOI: 10.1016/j.physletb.2011.12.046
Grant ID: ARC
Published version: http://dx.doi.org/10.1016/j.physletb.2011.12.046
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Physics publications

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