Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115201
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Type: Journal article
Title: Measurements of W±Z production cross sections in pp collisions at √s = 8 TeV with the ATLAS detector and limits on anomalous gauge boson self-couplings
Other Titles: Measurements of W+/-Z production cross sections in pp collisions at root s = 8 TeV with the ATLAS detector and limits on anomalous gauge boson self-couplings
Author: Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Abeloos, B.
Aben, R.
Abolins, M.
Abouzeid, O.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adamczyk, L.
Adams, D.
Adelman, J.
Adomeit, S.
Adye, T.
Affolder, A.
Agatonovic-Jovin, T.
et al.
Citation: Physical Review D, 2016; 93(9):092004-1-092004-36
Publisher: American Physical Society
Issue Date: 2016
ISSN: 2470-0010
2470-0029
Statement of
Responsibility: 
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... [et al.] (The ATLAS Collaboration)
Abstract: This paper presents measurements of W±Z production in pp collisions at a center-of-mass energy of 8 TeV. The gauge bosons are reconstructed using their leptonic decay modes into electrons and muons. The data were collected in 2012 by the ATLAS experiment at the Large Hadron Collider and correspond to an integrated luminosity of 20.3  fb⁻¹. The measured inclusive cross section in the detector fiducial region is σW±Z→ℓ′νℓℓ=35.1±0.9(stat)±0.8(sys)±0.8(lumi)  fb, for one leptonic decay channel. In comparison, the next-to-leading-order Standard Model expectation is 30.0±2.1  fb. Cross sections for W⁺Z and W⁻Z production and their ratio are presented as well as differential cross sections for several kinematic observables. Limits on anomalous triple gauge boson couplings are derived from the transverse mass spectrum of the W±Z system. From the analysis of events with a W and a Z boson associated with two or more forward jets an upper limit at 95% confidence level on the W±Z scattering cross section of 0.63 fb, for each leptonic decay channel, is established, while the Standard Model prediction at next-to-leading order is 0.13±0.01  fb. Limits on anomalous quartic gauge boson couplings are also extracted.
Rights: © 2016 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0030049739
DOI: 10.1103/PhysRevD.93.092004
Appears in Collections:Physics publications

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