Measurement of Z Boson Production in Pb-Pb Collisions at √sNN=2.76 TeV with the ATLAS Detector
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Aad-2013-Measurement of Z Boson Production.pdf
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711.17 KB
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Author(s)
Taylor, Frank E.
Date Issued
January 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aad, G. et al. “Measurement of Z Boson Production in Pb-Pb Collisions at sqrt[s_{NN}]=2.76 TeV with the ATLAS Detector.” Physical Review Letters 110.2 (2013). © 2013 CERN, for the ATLAS Collaboration
Version
Final published version
Abstract
The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15 nb[superscript -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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 3.0
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.110.022301
