Szczegóły publikacji
Opis bibliograficzny
Observation of strong nuclear suppression in exclusive $J/\psi$ photoproduction in Au+Au ultraperipheral collisions at RHIC / M. I. Abdulhamid, [et al.], L. ADAMCZYK, [et al.], M. PRZYBYCIEŃ, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2024 — vol. 133 iss. 5 art. no. 052301, s. 052301-1–052301-9. — Bibliogr. s. 052301-7–052301-9, Abstr. — Publikacja dostępna online od: 2024-07-31
Autorzy (366)
- AGHAdamczyk Leszek
- AGHPrzybycień Mariusz
- Abdulhamid M. I.
Dane bibliometryczne
| ID BaDAP | 155558 |
|---|---|
| Data dodania do BaDAP | 2024-10-24 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.133.052301 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
We report a measurement of exclusive J/ψ and ψ(2s) photoproduction in Au+Au ultraperipheral collisions at sqrt[s_{NN}]=200 GeV using the STAR detector. For the first time, (i) the ψ(2s) photoproduction in midrapidity at the Relativistic Heavy-Ion Collider has been experimentally measured; (ii) nuclear suppression factors are measured for both the coherent and incoherent J/ψ production. At average photon-nucleon center-of-mass energy of 25.0 GeV, the coherent and incoherent J/ψ cross sections of Au nuclei are found to be 71±10% and 36±7%, respectively, of that of free protons. The stronger suppression observed in the incoherent production provides a new experimental handle to study the initial-state parton density in heavy nuclei. Data are compared with theoretical models quantitatively.
