Szczegóły publikacji
Opis bibliograficzny
Coherent $J∕\psi$ photoproduction at midrapidity in Pb − Pb collisions at $\sqrt{s_{NN}}$= 5.02 TeV / S. Acharya [et al.], B. BALIŚ, [et al.], M. GORGOŃ, [et al.], A. HORZYK, [et al.], M. JABŁOŃSKI, [et al.], J. P. KITOWSKI, [et al.], S. D. KORYCIAK, [et al.], T. M. LELEK, [et al.], E. MAJERZ, [et al.], R. W. MARCJAN, [et al.], D. K. PŁÓCIENNIK, [et al.], P. G. RUSSEK, [et al.] // Physics Letters . B ; ISSN 0370-2693. — 2025 — vol. 871 art. no. 139952, s. 1–12. — Bibliogr. s. 11–12, Abstr. — Publikacja dostępna online od: 2025-10-20
Autorzy (1088)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 165230 |
|---|---|
| Data dodania do BaDAP | 2026-01-08 |
| DOI | 10.1016/j.physletb.2025.139952 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
The coherent J/ ψ photoproduction cross section is measured for the first time at midrapidity in peripheral to semicentral Pb−Pb collisions at sNN=5.02 TeV. The centrality differential cross section d σ /d y is reported for the centrality range 40–90%, together with the doubly-differential cross section d2 σ /d y d p T, extracted in two peripheral centrality classes. The J/ ψ mesons are reconstructed in the dielectron channel, in the rapidity interval | y | < 0.9 using the ALICE central barrel detectors. The J/ ψ cross section at midrapidity is statistically compatible to the earlier ALICE measurement at forward rapidity and at the same centre-of-mass energy, and shows only a mild centrality dependence over the covered range. Several sets of theoretical calculations taking into account the hadronic overlap in the collisions but ignoring possible final-state effects from a hot expanding medium are found to give a fairly good description of the current measurements within uncertainties.
