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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/46743
Title: Study of Z Boson Production in PbPb Collisions at √sNN=2.76  TeV
Authors: Chatrchyan, S.; Brochero Cifuentes, J. A.; Cabrillo, I. J.; Calderón, A.; Chamizo Llatas, M.; Chuang, S. H.; Duarte Campderros, J.; Felcini, M.; Fernández, M.; Gómez, G.; González Sánchez, J.; Jorda, C.; Lobelle Pardo, P.; López Virto, A.; Marco, Jesús; Marco, Rafael; Martínez-Rivero, Celso; Matorras, Francisco; Piedra, Jonatan; Muñoz Sánchez, F. J.; Rodrigo, Teresa; Rodriguez Marrero, Ana Y.; Ruiz Jimeno, Alberto; Scodellaro, Luca; Sobron Sañudo, M.; Vilar, Rocío; Vila, Iván
Issue Date: May-2011
Publisher: American Physical Society
Citation: Physical Review Letters 106(21): 212301 (2011)
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 (y) and per minimum bias event of [33.8±5.5(stat)±4.4(syst)]×10-8, 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.
Description: 14 páginas, 1 tabla, 2 figuras.-- PACS numbers: 25.75.Cj, 12.38.Bx, 14.70.Hp.-- Creative Commons Attribution 3.0 License.-- CMS Collaboration: et al.
Publisher version (URL): http://dx.doi.org/10.1103/PhysRevLett.106.212301
URI: http://hdl.handle.net/10261/46743
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.106.212301
E-ISSN: 1079-7114
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