Measurement of Z Boson Production in Pb-Pb Collisions at sNN−−−−√=2.76 TeV with the ATLAS Detector

, The ATLAS collaboration (2013) Measurement of Z Boson Production in Pb-Pb Collisions at sNN−−−−√=2.76  TeV with the ATLAS Detector. Physical review letters, 110 (2). ISSN 1079-7114

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Abstract

The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15  nb−1 of integrated luminosity obtained in the 2011 LHC Pb+Pb run at sNN−−−−√=2.76  TeV. The Z bosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-event Z boson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of the Z boson with respect to the event plane is found to be consistent with zero.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
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. © 2013 CERN, for the ATLAS Collaboration
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
67963
Deposited By:
Deposited On:
10 Dec 2013 16:26
Refereed?:
Yes
Published?:
Published
Last Modified:
26 Nov 2020 02:28