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

ContributorsATLAS Collaboration
Published inPhysical review letters, vol. 110, no. 02, 022301
Publication date2013
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.

Citation (ISO format)
ATLAS Collaboration. Measurement of Z Boson Production in Pb-Pb Collisions at √sNN=2.76  TeV with the ATLAS Detector. In: Physical review letters, 2013, vol. 110, n° 02, p. 022301. doi: 10.1103/PhysRevLett.110.022301
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Journal ISSN0031-9007
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