Measurement of Boson Production in Pb-Pb Collisions at with the ATLAS Detector
Journal Article
·
· Physical Review Letters
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 √ s N N = 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.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- ATLAS Collaboration
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1083528
- Report Number(s):
- SLAC-PUB-15552; PRLTAO; arXiv:1012.5382
- Journal Information:
- Physical Review Letters, Vol. 110, Issue 2; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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