Observation of double J/ψ meson production in pPb collisions at √sNN=8.16 TeV

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dc.authoridTapper, Alexander/0000-0003-4543-864X
dc.authoridAkgun, Bora/0000-0001-8888-3562
dc.authoridNavarrete Ramos, Efren/0000-0002-5180-4020
dc.authoridRossi Tisbeni, Simone/0000-0001-6776-285X
dc.authoridBruschini, Davide/0000-0001-7248-2967
dc.authoridHall, Geoffrey/0000-0002-6299-8385
dc.authoridDella Ricca, Giuseppe/0000-0003-2831-6982
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J. W.
dc.contributor.authorBergauer, T.
dc.contributor.authorChatterjee, S.
dc.contributor.authorDamanakis, K.
dc.date.accessioned2025-03-20T09:50:51Z
dc.date.available2025-03-20T09:50:51Z
dc.date.issued2024
dc.departmentİzmir Bakırçay Üniversitesi
dc.description.abstractThe first observation of the concurrent production of two J/psi mesons in proton-nucleus collisions is presented. The analysis is based on a proton-lead (pPb) data sample recorded at a nucleon-nucleon center-of-mass energy of 8.16 TeV by the CMS experiment at the CERN LHC and corresponding to an integrated luminosity of 174.6 nb(-1). The two J/psi mesons are reconstructed in their mu(+)mu(-) decay channels with transverse momenta p(T) > 6.5 GeV and rapidity vertical bar y vertical bar < 2.4. Events where one of the J/psi mesons is reconstructed in the dielectron channel are also considered in the search. The pPb -> J/psi J/psi +X process is observed with a significance of 5.3 standard deviations. The measured inclusive fiducial cross section, using the four-muon channel alone, is sigma(pPb (-> J/psi J/psi + X) = 22.0 +/- 8.9(stat) +/- 1.5(syst) nb. A fit of the data to the expected rapidity separation for pairs of J/psi mesons produced in single (SPS) and double (DPS) parton scatterings yields sigma(pPb)(SPS) (-> J/psi J/psi + X) = 16.5 +/- 10.8(stat) +/- 0.1(syst) nb and sigma(pPb)(DPS) (-> J/psi J/psi + X) = 5.4 +/- 6.2(stat) +/- 0.4(syst) nb, respectively. This latter result can he transformed into a lower hound on the effective DPS cross section, closely related to the squared average interparton transverse separation in the collision, of sigma(eff) > 1.0 mb at 95% confidence level.
dc.description.sponsorshipFWF; FNRS; FWO (Belgium) [30820817]; CAPES; FAPERJ; FAPERGS; FAPESP (Brazil); BNSF (Bulgaria); MoST; NSFC (China); CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG [MoER TK202]; Academy of Finland; MEC; HIP (Finland); CEA; CNRS/IN2P3 (France); SRNSF; BMBF; HGF (Germany); NKFIH (Hungary); DAE; DST; IPM; SEI (Ireland); INFN (Italy); NRF (Republic of Korea); MES (Latvia); MOE and UM (Malaysia); BUAP, CINVESTAV; CONACYT; UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); FCT (Portugal); MESTD (Serbia); PCT[(Spain)]; MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); NSTDA (Thailand); NASU (Ukraine); DOE; NSF (USA); Marie Curie program; European Research Council [675440, 724704, 752730, 758316, 765710, 824093, 101115353, 101002207]; COST Action [A16108]; Leventis Foundation; Alfred P. Sloan Foundation; Alexander von Humboldt Foundation; Science Committee [22r1-037]; Belgian Federal Science Policy Office; Fonds pour la Formation a la Recherche dans l'Industrie et dans l' Agriculture [FR1A-Belgium]; Beijing Municipal Science AMP; Technology Commission [Z191100007219010]; Fundamental Research Funds for the Central Universities (China); Ministry of Education; Youth and Sports (MEYS) of the Czech Republic; Shota Rustaveli National Science Foundation [FR-22-985]; Deutsche Forschungsgemeinschaft [EXC 2121, 390833306, 400140256-GRK2497]; Hellenic Foundation for Research and Innovation (HERO) [2288]; Hungarian Academy of Sciences; NKFIH [K 131991, K 133046, K 138136, K 143460, K 143477, K 146913, K 146914, K 147048, 2020 -2.2.1 -ED -2021-00181, TKP2021NKTA-64]; Council of Science and Industrial Research, India [1CSC]; National Research Center for High Performance Computing, Big Data and Quantum Computing and FAIR Future Artificial Intelligence Research - NextGenerationEU program (Italy); Latvian Council of Science; Ministry of Education and Science [2022/WK/14]; National Science Center [2021/41/B/ST2/01369, 2021/43/B/ST2/01552]; Fundacdo para a Ciencia e a Tecnologia [CEECIND/01334/2018]; National Priorities Research Program by Qatar National Research Fund [MCIN/AEI/10.13039/501100011033]; ERDF a way of making Europe; Programa Estatal de Foment() de la InvestigaciOn Cientifica y Tecnica de Excelencia Marfa de Maeztu [MDM-2017-0765]; Programa Severo Ochoa del Principado de Asturias (Spain); National Science, Research and Innovation Fund via the Program Management Unit for Human Resources AMP; Institutional Development, Research and Innovation [B37G660013]; Kavli Foundation; Nvidia Corporation; SuperMicro Corporation; Welch Foundation [C-1845]; Weston Havens Foundation (USA); European Research Council (ERC) [101002207] Funding Source: European Research Council (ERC)
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 centers and personnel of the Worldwide LHC Computing Grid and other centers 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, the CMS detector, and the supporting computing infrastructure provided by the following funding agencies: SC (Armenia), BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNN, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG, RVTT3 and MoER TK202 (Estonia); Academy of Finland. MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF ((eorgia); BMBF, DEG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SEI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LMTLT (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCT[(Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHES I and NSTDA (Thailand); TUB1TAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie Curie program and the European Research Council and Horizon 2020 Grants No. 675440, No. 724704, No. 752730, No. 758316, No. 765710, No. 824093, No. 101115353, No. 101002207, and COST Action [.A16108 (European Union); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Science Committee, Project No. 22r1-037 (Armenia); the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l' Agriculture (FR1A-Belgium); the F.R.S.-FN RS and FWO (Belgium) under the Excellence of Science-EOSbell Project No. 30820817; the Beijing Municipal Science & Technology Commission, No. Z191100007219010 and Fundamental Research Funds for the Central Universities (China); the Ministry of Education. Youth and Sports (MEYS) of the Czech Republic; the Shota Rustaveli National Science Foundation, Grant No. FR-22-985 (Georgia); the Deutsche Forschungsgemeinschaft (DEG), under Germany's Excellence Strategy EXC 2121 Quantum Universe Grant No. 390833306, and under Project No. 400140256-GRK2497; the Hellenic Foundation for Research and Innovation (HERO, Project No. 2288 (Greece); the Hungarian Academy of Sciences, the New National Excellence Program UNKP, the NKFIH research Grants No. K 131991, No. K 133046, No. K 138136, No. K 143460, No. K 143477, No. K 146913, No. K 146914, No. K 147048, 2020 -2.2.1 -ED -2021-00181, and TKP2021NKTA-64 (Hungary); the Council of Science and Industrial Research, India; 1CSC National Research Center for High Performance Computing, Big Data and Quantum Computing and FAIR Future Artificial Intelligence Research, funded by the NextGenerationEU program (Italy); the Latvian Council of Science; the Ministry of Education and Science, project no. 2022/WK/14, and the National Science Center, Contracts No. 2021/41/B/ST2/01369 and No.r 2021/43/B/ST2/01552 (Poland); the Fundacdo para a Ciencia e a Tecnologia, grant CEECIND/01334/2018 (Portugal); the National Priorities Research Program by Qatar National Research Fund; Grant No. MCIN/AEI/10.13039/501100011033, ERDF a way of making Europe, and the Programa Estatal de Foment() de la InvestigaciOn Cientifica y Tecnica de Excelencia Marfa de Maeztu, grant MDM-2017-0765 and Programa Severo Ochoa del Principado de Asturias (Spain); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project, and the National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation, Grant No. B37G660013 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, Contract No. C-1845; and the Weston Havens Foundation (USA).
dc.identifier.doi10.1103/PhysRevD.110.092002
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85209751977
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.110.092002
dc.identifier.urihttps://hdl.handle.net/20.500.14034/2346
dc.identifier.volume110
dc.identifier.wosWOS:001381894700001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review D
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250319
dc.subjectDouble Parton Scatterings
dc.subjectEvent Generator
dc.subjectMatrix-Element
dc.subjectHelac-Onia
dc.subjectSearch
dc.subjectProton
dc.subjectLhc
dc.titleObservation of double J/ψ meson production in pPb collisions at √sNN=8.16 TeV
dc.typeArticle

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