Szczegóły publikacji
Opis bibliograficzny
Probing small Bjorken-x nuclear gluonic structure via coherent $J/\Psi$ photoproduction in ultraperipheral Pb-Pb collisions at $\sqrt{s_{NN}}$=5.02 TeV / A. Tumasyan, [et al.], V. AVATI, L. GRZANKA, M. MALAWSKI, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2023 — vol. 131 iss. 26 art. no. 262301, s. 262301-1–262301-22. — Bibliogr. s. 262301-8–262301-10, Abstr. — Publikacja dostępna online od: 2023-12-28
Autorzy (2331)
- AGHAvati Valentina
- AGHGrzanka Leszek
- AGHMalawski Maciej
- Tumasyan Armen
Dane bibliometryczne
| ID BaDAP | 152538 |
|---|---|
| Data dodania do BaDAP | 2024-04-22 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.131.262301 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp | |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
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.