Measurement of the production cross section ratio ?(?b2(1P))/?(?b1(1P)) in pp collisions at ?s=8TeV

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dc.authoridLethuillier, Morgan/0000-0001-6185-2045
dc.authoridMartinez, German Ruben/0000-0001-5443-9383
dc.authoridEcklund, Karl/0000-0002-6976-4637
dc.authoridBoccali, Tommaso/0000-0002-9930-9299
dc.authoridHeracleous, Natalie/0000-0002-2744-7238
dc.authoridDella Ricca, Giuseppe/0000-0003-2831-6982
dc.authoridKolberg, Ted/0000-0002-0211-6109
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorThe CMS Collaboration
dc.date.accessioned2025-03-07T20:17:56Z
dc.date.available2025-03-07T20:17:56Z
dc.date.issued2015
dc.departmentÇağ Üniversitesi
dc.description.abstractA measurement of the production cross section ratio sigma(chi b2(1P))/sigma(chi b1(1P)) is presented. The chi b1 (1P) and chi b2 (1P) bottomonium states, promptly produced in pp collisions at root s = 8TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays chi b1,2(1P) -> Y(1S) + gamma. The emitted photons are measured through their conversion to e(+) e(-) pairs, whose reconstruction allows the two states to be resolved. The Y(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, vertical bar eta(gamma)vertical bar < 1.0; the Y(1S) rapidity, vertical bar y(Y)vertical bar < 1.5; and the Y(1S) transverse momentum, 7 < p(T)(Y) < 40 GeV. The cross section ratio shows no significant dependence on the.(1S) transverse momentum, with a measured average value of 0.85 +/- 0.07 (stat + syst) +/- 0.08 (BF), 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 chi b branching fractions. (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
dc.description.sponsorshipBMWFW (Austria); FWF (Austria); FNRS (Belgium); FWO (Belgium); CNPq (Brazil); CAPES (Brazil); FAPERJ (Brazil); FAPESP (Brazil); MES (Bulgaria); CERN; CAS (China); MoST (China); COLCIENCIAS (Colombia); MSES (Croatia); CSF (Croatia); RPF (Cyprus); MoER (Estonia); ERC IUT (Estonia); ERDF (Estonia); Academy of Finland (Finland); MEC; HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF; DFG; HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE; DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF; WCU (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV; CONACYT; SEP; UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE; NSC (Poland); FCT (Portugal); JINR (Dubna); MON; RosAtom; RAS; RFBR (Russia); MESTD (Serbia); SEIDI; CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter; IPST; STAR; NSTDA (Thailand); TUBITAK; TAEK (Turkey); NASU; SFFR (Ukraine); STFC (United Kingdom); DOE; NSF (USA); Marie-Curie programme; European Research Council; EPLANET (European Union); Leventis Foundation; A. P. Sloan Foundation; Alexander von Humboldt Foundation; Belgian Federal Science Policy Office; Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; Council of Science and Industrial Research, India; HOMING PLUS programme of Foundation For Polish Science; European Union, Regional Development Fund; Compagnia di San Paolo (Torino); Consorzio per la Fisica (Trieste); MIUR project (Italy) [20108T4XTM]; EU-ESF; Greek NSRF; National Priorities Research Program by Qatar National Research Fund; STFC [ST/I005912/1, ST/I505580/1, ST/J005665/1, ST/K003542/1, ST/M005356/1, ST/K003844/1, ST/K001604/1, ST/H00081X/2, ST/J50094X/1, ST/L005603/1, ST/K001639/1, ST/L00609X/1, ST/J004901/1, ST/M004775/1] Funding Source: UKRI; Division Of Physics; Direct For Mathematical & Physical Scien [1120138, 1314131] Funding Source: National Science Foundation; Division Of Physics; Direct For Mathematical & Physical Scien [1151640, 1211067, 1205960, 1306951] Funding Source: National Science Foundation
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); MoER, ERC IUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA).r Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS programme of Foundation For Polish Science, cofinanced from European Union, Regional Development Fund; the Compagnia di San Paolo (Torino); the Consorzio per la Fisica (Trieste); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; and the National Priorities Research Program by Qatar National Research Fund.
dc.identifier.doi10.1016/j.physletb.2015.02.048
dc.identifier.endpage402
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.scopus2-s2.0-84924995960
dc.identifier.scopusqualityQ1
dc.identifier.startpage383
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2015.02.048
dc.identifier.urihttps://hdl.handle.net/20.500.12507/3093
dc.identifier.volume743
dc.identifier.wosWOS:000352147500058
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysics Letters B
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20241226
dc.subjectCMS
dc.subjectQuarkonium production
dc.subjectP-wave states
dc.subjectBottomonium
dc.titleMeasurement of the production cross section ratio ?(?b2(1P))/?(?b1(1P)) in pp collisions at ?s=8TeV
dc.typeArticle

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