Abstract
The ATLAS experiment has observed 1995 Z boson candidates from an integrated luminosity 0.15nb -1 collected in the 2011 LHC Pb + Pb run at sNN=2.76 TeV. The Z bosons are reconstructed via di-electron and di-muon decay channels. The results from both channels are consistent with each other and are combined. The background is less than 3% of the selected sample. Within the statistical and systematic uncertainties, the per-event Z boson yield integrated over rapidity |y Z| < 2.5 is proportional to the number of binary collisions estimated by the Glauber model. The elliptic flow coefficient of the azimuthal distribution of the Z boson with respect to the event plane is consistent with zero.
Original language | English |
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Pages (from-to) | 379-382 |
Number of pages | 4 |
Journal | Nuclear Physics A |
Volume | 910-911 |
DOIs | |
State | Published - 2 Aug 2013 |
Keywords
- Heavy-ion Collisions
- Z bosons
ASJC Scopus subject areas
- Nuclear and High Energy Physics