@article{3073478,
    title = "Study of W boson production in PbPb and pp collisions at sNN=2.76 TeV",
    author = "Chatrchyan, S. and Khachatryan, V. and Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Erö, J. and Fabjan, C. and Friedl, M. and Frühwirth, R. and Ghete, V.M. and Hammer, J. and Hörmann, N. and Hrubec, J. and Jeitler, M. and Kiesenhofer, W. and Knünz, V. and Krammer, M. and Liko, D. and Mikulec, I. and Pernicka, M. and Rahbaran, B. and Rohringer, C. and Rohringer, H. and Schöfbeck, R. and Strauss, J. and Taurok, A. and Wagner, P. and Waltenberger, W. and Walzel, G. and Widl, E. and Wulz, C.-E. and Mossolov, V. and Shumeiko, N. and Suarez Gonzalez, J. and Bansal, S. and Cornelis, T. and De Wolf, E.A. and Janssen, X. and Luyckx, S. and Maes, T. and Mucibello, L. and Ochesanu, S. and Roland, B. and Rougny, R. and Selvaggi, M. and Staykova, Z. and Van Haevermaet, H. and Van Mechelen, P. and Van Remortel, N. and Van Spilbeeck, A. and Blekman, F. and Blyweert, S. and D'Hondt, J. and Gonzalez Suarez, R. and Kalogeropoulos, A. and Maes, M. and Olbrechts, A. and Van Doninck, W. and Van Mulders, P. and Van Onsem, G.P. and Villella, I. and Charaf, O. and Clerbaux, B. and De Lentdecker, G. and Dero, V. and Gay, A.P.R. and Hreus, T. and Léonard, A. and Marage, P.E. and Reis, T. and Thomas, L. and Vander Velde, C. and Vanlaer, P. and Wang, J. and Adler, V. and Beernaert, K. and Cimmino, A. and Costantini, S. and Garcia, G. and Grunewald, M. and Klein, B. and Lellouch, J. and Marinov, A. and McCartin, J. and Ocampo Rios, A.A. and Ryckbosch, D. and Strobbe, N. and Thyssen, F. and Tytgat, M. and Vanelderen, L. and Verwilligen, P. and Walsh, S. and Yazgan, E. and Zaganidis, N. and Basegmez, S. and Bruno, G. and Castello, R. and Caudron, A. and Ceard, L. and Delaere, C. and du Pree, T. and Favart, D. and Forthomme, L. and Giammanco, A. and Hollar, J. and Lemaitre, V. and Liao, J. and Militaru, O. and Nuttens, C. and Pagano, D. and Perrini, L. and Pin, A. and Piotrzkowski, K. and Schul, N. and Vizan Garcia, J.M. and Beliy, N. and Caebergs, T. and Daubie, E. and Hammad, G.H. and Alves, G.A. and Correa Martins Junior, M. and De Jesus Damiao, D. and Martins, T. and Pol, M.E. and Souza, M.H.G. and Aldá Júnior, W.L. and Carvalho, W. and Custódio, A. and Da Costa, E.M. and De Oliveira Martins, C. and Fonseca De Souza, S. and Matos Figueiredo, D. and Mundim, L. and Nogima, H. and Oguri, V. and Prado Da Silva, W.L. and Santoro, A. and Soares Jorge, L. and Sznajder, A. and Bernardes, C.A. and Dias, F.A. and Fernandez Perez Tomei, T.R. and Gregores, E.M. and Lagana, C. and Marinho, F. and Mercadante, P.G. and Novaes, S.F. and Padula, S.S. and Genchev, V. and Iaydjiev, P. and Piperov, S. and Rodozov, M. and Stoykova, S. and Sultanov, G. and Tcholakov, V. and Trayanov, R. and Vutova, M. and Dimitrov, A. and Hadjiiska, R. and Kozhuharov, V. and Litov, L. and Pavlov, B. and Petkov, P. and Bian, J.G. and Chen, G.M. and Chen, H.S. and Jiang, C.H. and Liang, D. and Liang, S. and Meng, X. and Tao, J. and Wang, J. and Wang, X. 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    journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
    year = "2012",
    volume = "715",
    number = "1-3",
    pages = "66-87",
    doi = "10.1016/j.physletb.2012.07.025",
    abstract = "A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon-nucleon (NN) centre-of-mass energy sNN of 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 μb -1, the number of W→μν μ decays is extracted in the region of muon pseudorapidity |η μ|<2.1 and transverse momentum pTμ>25 GeV/c. Yields of muons found per unit of pseudorapidity correspond to (159±10(stat.)±12(syst.))×10 -8 W + and (154±10(stat.)±12(syst.))×10 -8 W - bosons per minimum-bias PbPb collision. The dependence of W production on the centrality of PbPb collisions is consistent with a scaling of the yield by the number of incoherent NN collisions. The yield of W bosons is also studied in a sample of pp interactions at s=2.76 TeV corresponding to an integrated luminosity of 231 nb -1. The individual W + and W - yields in PbPb and pp collisions are found to agree, once the neutron and proton content in Pb nuclei is taken into account. Likewise, the difference observed in the dependence of the positive and negative muon production on pseudorapidity is consistent with next-to-leading-order perturbative QCD calculations. © 2012 CERN."
}