Chatrchyan, S. ; Mondal, N. K. ; et, al (2011) Study of Z boson production in PbPb collisions at √sNN=2.76 TeV Physical Review Letters, 106 (21). 212301_1- 212301 _14. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v106/i21/e212301
Related URL: http://dx.doi.org/10.1103/PhysRevLett.106.212301
Abstract
A search for Z bosons in the µ+µ- decay channel has been performed in PbPb collisions at √sNN=2.76 TeV with the CMS detector at the LHC, in a 7.2 µb−1 data sample. The number of opposite-sign muon pairs observed in the 60-120 GeV/c2 invariant mass range is 39, corresponding to a yield per unit of rapidity (Υ) and per minimum bias event of [33.8±5.5(stat)±4.4(syst)]×10−8, in the |Υ|<2.0 range. Rapidity, transverse momentum, and centrality dependencies are also measured. The results agree with next-to-leading order QCD calculations, scaled by the number of incoherent nucleon-nucleon collisions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 76214 |
| Deposited On: | 31 Dec 2011 08:23 |
| Last Modified: | 31 Dec 2011 08:23 |
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