دورية أكاديمية
Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √sNN = 5.02 TeV
| العنوان: | Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √sNN = 5.02 TeV |
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| المؤلفون: | Damanakis K., Adam W., Chatterjee S., Bergauer T., Andrejkovic J.W., Dragicevic M., Tumasyan A. |
| بيانات النشر: | American Physical Society |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Germanium alloys, Binary alloys, Heavy ions, Ion exchange, Lead alloys, Tellurium compounds, Center-of-mass energies, Centre-of-mass energies, Heaviest nuclei, Heavy ion interactions, Integrated luminosity, Lead collisions, Nucleon-nucleon, Pb-Pb collisions, Photoproductions, Relativistic heavy ions, Photons, article, controlled study, diagnosis |
| الوصف: | 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 ;lt; WPbγN ;lt; 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. ; National Science Foundation, NSF; U.S. Department of Energy, USDOE; Direktion für Entwicklung und Zusammenarbeit, DEZA; SecretarÃa de Educación Pública, SEP; CERN; Türkiye Enerji, Nükleer ve Maden AraÅŸtırma 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 NÃvel 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 ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0031-9007 |
| العلاقة: | Physical Review Letters; Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı; https://doi.org/10.1103/PhysRevLett.131.262301Test; https://hdl.handle.net/20.500.13091/5143Test; 2-s2.0-85182298097; 131; 26; WOS:001153473000001 |
| DOI: | 10.1103/PhysRevLett.131.262301 |
| الإتاحة: | https://doi.org/20.500.13091/514310.1103/PhysRevLett.131.262301Test https://hdl.handle.net/20.500.13091/5143Test |
| حقوق: | open |
| رقم الانضمام: | edsbas.9FAC1B02 |
| قاعدة البيانات: | BASE |
| تدمد: | 00319007 |
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| DOI: | 10.1103/PhysRevLett.131.262301 |