Szczegóły publikacji
Opis bibliograficzny
Evidence for $J/\psi$ suppression in incoherent photonuclear production / S. Acharya, [et al.], B. BALIŚ, [et al.], M. GORGOŃ, [et al.], A. HORZYK, [et al.], M. JABŁOŃSKI, [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.], P. K. WIĄCEK, [et al.] // Physical Review Letters ; ISSN 0031-9007 . — 2026 — vol. 137 iss. 5 art. no. 052301, s. 052301-1–052301–16. — Bibliogr. s. 052301-7–052301-8, Abstr. — Publikacja dostępna online od: 2026-07-29
Autorzy (1087)
Dane bibliometryczne
| ID BaDAP | 169775 |
|---|---|
| Data dodania do BaDAP | 2026-10-05 |
| Tekst źródłowy | URL |
| DOI | 10.1103/jmwb-75m7 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
According to quantum chromodynamics, at sufficiently high energy, the structure of hadrons reveals a dynamic equilibrium between gluon splitting and gluon recombination—a phenomenon known as saturation. The process of diffractive photonuclear production of a 𝐽/𝜓 vector meson provides a direct insight into the gluon composition of hadrons. The 𝐽/𝜓 production as a function of momentum transferred in the interaction, quantified by the Mandelstam-𝑡 variable, serves as an excellent probe for studying the structure of hadrons within the impact-parameter plane, because different ranges in 𝑡 are sensitive to the dynamics of the gluon field at varying spatial size scales. The ALICE Collaboration has measured the energy dependence of incoherent photonuclear production of 𝐽/𝜓 mesons off lead ions, at √𝑠NN=5.02 TeV, for three Mandelstam-𝑡 intervals. The energy dependence of the photonuclear cross section at the highest |𝑡| range measured, (0.81<|𝑡|<1.44) GeV2, is sensitive to subnucleonic structures of the Pb target. The increase of the cross section with energy at large |𝑡| shows evidence of suppression with respect to the increase seen at low |𝑡|. The observed pattern of the energy evolution in data is similar to that of gluon saturation models.
