Study of Z Boson Production in PbPb Collisions at √sNN=2.76 [square root of S subscript NN = 2.76] TeV
Author(s)
Alver, Burak Han; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Dutta, Valentina; Everaerts, Pieter Bruno Bart; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Harris, Philip Coleman; Klute, Markus; Lee, Yen-Jie; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Rudolph, Matthew Scott; Stephans, George S. F.; Sung, Kevin Kai Hong; Wenger, Edward Allen; Xie, Si; Yang, Mingming; Yilmaz, Yetkin; Zanetti, Marco; Sumorok, Konstanty C; Yoon, A. S.; Bauer, Gerry P; Chan, M.; Kim, Y.; Li, W.; Loizides, Constantinos; Luckey Jr, P David; Roland, Christof E; Roland, Gunther M; ... Show more Show less
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A search for Z bosons in the μ+μ- [mu superscript + mu superscript -] decay channel has been performed in PbPb collisions at √sNN=2.76 [square root of S subscript NN = 2.76] TeV with the CMS detector at the LHC, in a 7.2 μb-1 [mu b superscript -1] data sample. The number of opposite-sign muon pairs observed in the 60–120 GeV/c2 [GeV / c superscript 2] invariant mass range is 39, corresponding to a yield per unit of rapidity (y) and per minimum bias event of [33.8±5.5(stat)±4.4(syst)] x 10-8 [10 superscript -8], in the |y|<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.
Date issued
2011-05Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical review letters
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. (CMS Collaboration) "Study of Z Boson Production in PbPb Collisions at √sNN=2.76 TeV" Phys. Rev. Lett. 106, 212301 (2011) © 2011 CERN, for the CMS Collaboration
Version: Final published version
ISSN
0031-9007