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dc.contributor.authorChatrchyan, S.
dc.contributor.authorIşıldak, Bora
dc.date.accessioned2014-11-19T09:03:23Z
dc.date.available2014-11-19T09:03:23Z
dc.date.issued2012-11-30
dc.identifier.issn1079-7114
dc.identifier.urihttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.222301
dc.identifier.urihttp://hdl.handle.net/10679/633
dc.description.abstractThe suppression of the individual gamma (nS) states in PbPb collisions with respect to their yields in pp data has been measured. The PbPb and pp data sets used in the analysis correspond to integrated luminosities of 150 mu b(-1) and 230 nb(-1), respectively, collected in 2011 by the CMS experiment at the LHC, at a center-of-mass energy per nucleon pair of 2.76 TeV. The gamma (nS) yields are measured from the dimuon invariant mass spectra. The suppression of the gamma (nS) yields in PbPb relative to the yields in pp, scaled by the number of nucleon-nucleon collisions, R-AA, is measured as a function of the collision centrality. Integrated over centrality, the R-AA values are 0.56 +/- 0.08(stat) +/- 0.07(syst), 0.12 +/- 0.04(stat) +/- 0.02(syst), and lower than 0.10 (at 95% confidence level), for the gamma (1S), gamma (2S), and gamma (3S) states, respectively. The results demonstrate the sequential suppression of the gamma (nS) states in PbPb collisions at LHC energies.en_US
dc.description.sponsorshipBMWF ; FWF ; FNRS ; FWO ; CNPq ; CAPES ; FAPERJ ; FAPESP ; MES ; CERN ; CAS ; MoST ; NSFC ; COLCIENCIAS ; MSES ; RPF ; MoER ; ERDF ; Academy of Finland ; MEC ; HIP ; CEA ; CNRS ; BMBF ; DFG ; HGF ; GSRT ; OTKA ; NKTH ; DAE ; DST ; IPM ; SFI ; INFN ; NRF ; WCU ; LAS ; CINVESTAV ; CONACYT ; UASLP-FAI ; MSI ; PAEC ; MSHE ; NSC ; FCT ; JINR ; MON ; RosAtom ; RAS ; RFBR ; MESTD ; SEIDI ; CPAN ; Swiss Funding Agencies ; NSC ; ThEPCenter ; IPST ; STAR ; NSTDA ; TUBITAK ; TAEK ; NASU ; STFC ; DOE ; NSF.
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.relationinfo:turkey/grantAgreement/TUBITAKen_US
dc.relation.ispartofPhysical Review Letters
dc.rightsrestrictedAccess
dc.titleObservation of sequential upsilon suppression in PbPb collisionsen_US
dc.typeArticleen_US
dc.peerreviewedyesen_US
dc.publicationstatuspublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID(ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora
dc.contributor.ozuauthorIşıldak, Bora
dc.creatorThe CMS Collaboration
dc.identifier.volume109
dc.identifier.issue22
dc.identifier.wosWOS:000311552100002
dc.identifier.doi10.1103/PhysRevLett.109.222301
dc.identifier.scopusSCOPUS:2-s2.0-84870570833
dc.contributor.authorMale1


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