Probing Small Bjorken-X Nuclear Gluonic Structure Via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √snn = 5.02 Tev

dc.contributor.author Tumasyan A.
dc.contributor.author Adam W.
dc.contributor.author Andrejkovic J.W.
dc.contributor.author Bergauer T.
dc.contributor.author Chatterjee S.
dc.contributor.author Damanakis K.
dc.contributor.author Dragicevic M.
dc.contributor.author Gürpınar Güler, Emine
dc.contributor.author Güler, Yalçın
dc.date.accessioned 2024-02-16T14:42:21Z
dc.date.available 2024-02-16T14:42:21Z
dc.date.issued 2023
dc.description.abstract Quasireal photons exchanged in relativistic heavy ion interactions are powerful probes of the gluonic structure of nuclei. The coherent J=ψ photoproduction cross section in ultraperipheral lead-lead collisions is measured as a function of photon-nucleus center-of-mass energies per nucleon (WPbγN) over a wide range of 40 < WPbγN < 400 GeV. Results are obtained using data at the nucleon-nucleon center-of-mass energy of 5.02 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 1.52 nb−1. The cross section is observed to rise rapidly at low WPbγN, and plateau above WPbγN ≈ 40 GeV, up to 400 GeV, entering a new regime of small Bjorken-x (≈6 × 10−5) gluons being probed in a heavy nucleus. The observed energy dependence is not predicted by current quantum chromodynamic models. © 2023 CERN, for the CMS Collaboration. en_US
dc.description.sponsorship National Science Foundation, NSF; U.S. Department of Energy, USDOE; Direktion für Entwicklung und Zusammenarbeit, DEZA; Secretaría de Educación Pública, SEP; CERN; Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu, TENMAK; Science and Technology Facilities Council, STFC; Department of Science and Technology, Ministry of Science and Technology, India, DST; Ministry of Education - Singapore, MOE; Department of Atomic Energy, Government of India, DAE; Science Foundation Ireland, SFI; Helmholtz-Gemeinschaft, HGF; Deutsche Forschungsgemeinschaft, DFG; Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP; National Natural Science Foundation of China, NSFC; National Science Council, NSC; Fundação para a Ciência e a Tecnologia, FCT; Eesti Teadusagentuur, ETAg: PRG445, PRG780, PRG803; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES; Academy of Finland, AKA; Bundesministerium für Bildung und Forschung, BMBF; Chinese Academy of Sciences, CAS; Austrian Science Fund, FWF; Fonds De La Recherche Scientifique - FNRS, FNRS; Ministry of Science and Technology of the People's Republic of China, MOST; Opetus- ja Kulttuuriministeriö; Fonds Wetenschappelijk Onderzoek, FWO; Consejo Nacional de Ciencia y Tecnología, CONACYT; Bulgarian National Science Fund, BNSF; Haridus- ja Teadusministeerium, HM; Ministry of Business, Innovation and Employment, MBIE; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq; Ministry of Science, ICT and Future Planning, MSIP; National Research Foundation of Korea, NRF; Instituto Nazionale di Fisica Nucleare, INFN; National Science and Technology Development Agency, สวทช; Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul, FAPERGS; Narodowe Centrum Nauki, NCN: 2015/19/N/ST2/02697, 2018/28/T/ST2/00199; Secretaría de Educación Superior, Ciencia, Tecnología e Innovación, SENESCYT; Universiti Malaya, UM; Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK; Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja, MPNTR; Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, FAPERJ; Ministry of Science and Technology, Taiwan, MOST; National Academy of Sciences of Ukraine, NASU; Centre National de la Recherche Scientifique, CNRS; Universidad Autónoma de San Luis Potosí, UASLP; Ministry of Education and Science, MES; Institute for Research in Fundamental Sciences, IPM; Benemérita Universidad Autónoma de Puebla, BUAP; Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA; Lietuvos Mokslų Akademija; European Regional Development Fund, ERDF; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, CINVESTAV; Pakistan Atomic Energy Commission, PAEC; Ministry of Science,Technology and Research, MoSTR; Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, BMBWF; Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFI; Institut National de Physique Nucléaire et de Physique des Particules, IN2P3; Ministry of Higher Education, Science, Research and Innovation, Thailand, MHESRI; Laboratorio Nacional de Supercómputo del Sureste de Mexico, LNS en_US
dc.identifier.doi 10.1103/PhysRevLett.131.262301
dc.identifier.issn 0031-9007
dc.identifier.issn 1079-7114
dc.identifier.scopus 2-s2.0-85182298097
dc.identifier.uri https://doi.org/10.1103/PhysRevLett.131.262301
dc.identifier.uri https://hdl.handle.net/20.500.13091/5143
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.relation.ispartof Physical Review Letters en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.subject Binary alloys en_US
dc.subject Germanium alloys en_US
dc.subject Heavy ions en_US
dc.subject Ion exchange en_US
dc.subject Lead alloys en_US
dc.subject Tellurium compounds en_US
dc.subject Center-of-mass energies en_US
dc.subject Centre-of-mass energies en_US
dc.subject Heaviest nuclei en_US
dc.subject Heavy ion interactions en_US
dc.subject Integrated luminosity en_US
dc.subject Lead collisions en_US
dc.subject Nucleon-nucleon en_US
dc.subject Pb-Pb collisions en_US
dc.subject Photoproductions en_US
dc.subject Relativistic heavy ions en_US
dc.subject Photons en_US
dc.subject article en_US
dc.subject controlled study en_US
dc.subject diagnosis en_US
dc.title Probing Small Bjorken-X Nuclear Gluonic Structure Via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √snn = 5.02 Tev en_US
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gdc.description.departmenttemp Tumasyan, A., Yerevan Physics Institute, Yerevan, Armenia, Yerevan State University, Yerevan, Armenia; Adam, W., Institut für Hochenergiephysik, Vienna, Austria; Andrejkovic, J.W., Institut für Hochenergiephysik, Vienna, Austria; Bergauer, T., Institut für Hochenergiephysik, Vienna, Austria; Chatterjee, S., Institut für Hochenergiephysik, Vienna, Austria; Damanakis, K., Institut für Hochenergiephysik, Vienna, Austria; Dragicevic, M., Institut für Hochenergiephysik, Vienna, Austria; Escalante Del Valle, A., Institut für Hochenergiephysik, Vienna, Austria; Hussain, P.S., Institut für Hochenergiephysik, Vienna, Austria; Jeitler, M., Institut für Hochenergiephysik, Vienna, Austria, TU Wien, Vienna, Austria; Krammer, N., Institut für Hochenergiephysik, Vienna, Austria; Lechner, L., Institut für Hochenergiephysik, Vienna, Austria; Liko, D., Institut für Hochenergiephysik, Vienna, Austria; Mikulec, I., Institut für Hochenergiephysik, Vienna, Austria; Schieck, J., Institut für Hochenergiephysik, Vienna, Austria, TU Wien, Vienna, Austria; Schöfbeck, R., Institut für Hochenergiephysik, Vienna, Austria; Schwarz, D., Institut für Hochenergiephysik, Vienna, Austria; Sonawane, M., Institut für Hochenergiephysik, Vienna, Austria; Templ, S., Insti en_US
gdc.description.issue 26 en_US
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gdc.oaire.keywords relativistic heavy-ion collisions
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