Show simple item record

dc.contributor.authorChatrchyan, S.
dc.contributor.authorIşıldak, Bora
dc.date.accessioned2014-11-22T13:15:44Z
dc.date.available2014-11-22T13:15:44Z
dc.date.issued2012
dc.identifier.issn0370-2693
dc.identifier.urihttp://hdl.handle.net/10679/643
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0370269312007654
dc.description.abstractA measurement is presented of W-boson production in PbPb collisions carried out at a nucleon-nucleon (NN) centre-of-mass energy root S-NN of 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 mu b(-1), the number of W -> mu v(mu) decays is extracted in the region of muon pseudorapidity vertical bar eta mu vertical bar < 2.1 and transverse momentum p(T)(mu) > 25 GeV/c. Yields of muons found per unit of pseudorapidity correspond to (159 +/- 10(stat.) +/- 12(syst.)) x 10(-8) W and (154 +/- 10(stat.) +/- 12(syst.)) x 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 root 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.en_US
dc.description.sponsorshipFMSR ; FNRS and FWO ; CNPq, CAPES, FAPERJ, and FAPESP ; MES ; CERN; CAS, MoST, and NSFC ; COLCIENCIAS ; MSES; RPF ; Academy of Sciences and NICPB ; Academy of Finland, ME, and HIP ; CEA and CNRS/IN2P3 ; BMBF, DFG, and HGF ; GSRT ; OTKA and NKTH ; DAE and DST ; IPM ; SFI ; INFN ; NRF and WCU ; LAS ; CINVESTAV, CONACYT, SEP, and UASLP-FAI ; PAEC ; SCSR ; FCT ; JINR ; MST and MAE ; MSTD ; MICINN and CPAN ; Swiss Funding Agencies ; NSC ; TUBITAK and TAEK ; STFC ; DOE and NSF ; Marie-Curie programme and the European Research Council ; the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans lʼIndustrie et dans lʼAgriculture ; the Agentschap voor Innovatie door Wetenschap en Technologie ; and the Council of Science and Industrial Research, India.
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relationinfo:turkey/grantAgreement/TUBITAKen_US
dc.relation.ispartofPhysics Letters B
dc.rightsrestrictedAccess
dc.titleStudy of W boson production in PbPb and pp collisions at root s(NN)=2.76 TeVen_US
dc.typeArticleen_US
dc.peerreviewedyesen_US
dc.publicationstatuspublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID124605
dc.contributor.ozuauthorIşıldak, Bora
dc.creatorThe CMS Collaboration
dc.identifier.volume715
dc.identifier.issue1-3
dc.identifier.startpage66
dc.identifier.endpage87
dc.identifier.wosWOS:000308519000011
dc.identifier.doi10.1016/j.physletb.2012.07.025
dc.subject.keywordsPhysicsen_US
dc.subject.keywordsHeavy-ionsen_US
dc.subject.keywordsW bosonsen_US
dc.subject.keywordsCMSen_US
dc.contributor.authorMale1


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record


Share this page