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https://hdl.handle.net/2440/102170
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Type: | Journal article |
Title: | Measurement of the cross section of high transverse momentum Z → bb¯ production in proton–proton collisions at √s = 8 TeV with the ATLAS Detector |
Other Titles: | Measurement of the cross section of high transverse momentum Z -> bb -bar production in proton-proton collisions at root s = 8 TeV with the ATLAS Detector |
Author: | ATLAS Collaboration, Aad, G. |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2014; 738:25-43 |
Publisher: | Elsevier |
Issue Date: | 2014 |
ISSN: | 0370-2693 1873-2445 |
Statement of Responsibility: | G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (ATLAS Collaboration) |
Abstract: | This Letter reports the observation of a high transverse momentum Z→b¯ bsignal in proton–proton col-lisions at √s=8TeVand the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5fb−1. The Z→b¯ bdecay is reconstructed from a pair of b-tagged jets, clustered with the anti-ktjet algorithm with R =0.4, that have low angular separation and form a dijet with pT>200GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet back-ground mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σfidZ→b¯ b=2.02±0.20(stat.)±0.25(syst.)±0.06(lumi.)pb=2.02±0.33pb, in good agreement with next-to-leading-order theoretical predictions. |
Rights: | Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP3. |
DOI: | 10.1016/j.physletb.2014.09.020 |
Published version: | http://dx.doi.org/10.1016/j.physletb.2014.09.020 |
Appears in Collections: | Aurora harvest 3 Physics publications |
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hdl_102170.pdf | Published version | 1.36 MB | Adobe PDF | View/Open |
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