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dc.contributor.authorKhachatryan, V.
dc.contributor.authorIşıldak, Bora
dc.date.accessioned2016-06-30T12:33:32Z
dc.date.available2016-06-30T12:33:32Z
dc.date.issued2015-04-09
dc.identifier.issn1873-2445
dc.identifier.urihttp://hdl.handle.net/10679/4195
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0370269315001392
dc.description.abstractA measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P) and χb2(1P) bottomonium states, promptly produced in pp collisions at View the MathML source, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P)→ϒ(1S)+γ. The emitted photons are measured through their conversion to e+e− pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 fb−1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ|<1.0; the ϒ(1S) rapidity, |yϒ|<1.5; and the ϒ(1S) transverse momentum, View the MathML source. The cross section ratio shows no significant dependence on the ϒ(1S) transverse momentum, with a measured average value of View the MathML source, where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the χb branching fractions.
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.publisherElsevier
dc.relationinfo:turkey/grantAgreement/TUBITAK
dc.relation.ispartofPhysics Letters B
dc.rightsrestrictedAccess
dc.titleMeasurement of the production cross section ratio σ(χ<inf>b2</inf>(1P))/σ(χ<inf>b1</inf>(1P)) in pp collisions at s=8TeVen_US
dc.typeArticleen_US
dc.peerreviewedyes
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.volume743
dc.identifier.startpage383
dc.identifier.endpage402
dc.identifier.wosWOS:000352147500058
dc.identifier.doi10.1016/j.physletb.2015.02.048
dc.subject.keywordsCMS
dc.subject.keywordsQuarkonium production
dc.subject.keywordsP-wave states
dc.subject.keywordsBottomonium
dc.identifier.scopusSCOPUS:2-s2.0-84924995960
dc.contributor.authorMale1


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