Study of Z Boson Production in PbPb Collisions at √sNN=2.76 [square root of S subscript NN = 2.76] TeV
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Chatrchyan-2011-Study of Z Boson Pro.pdf
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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
Date Issued
May 2011
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.106.212301
