Coherent photoproduction of light vector mesons off nuclear targets in the dipole picture

Summary, in English

We study the coherent photoproduction of light vector mesons in Pb-Pb collisions in the framework of color dipole approach. We employ the Glauber–Gribov formalism supplemented by an effective suppression factor R_G accounting for the gluon shadowing correction. We adjust the latter to reproduce the deep inelastic structure function F₂ (E665) and ρ meson photoproduction (ALICE) data. We achieve a good description of the available data points with R_G=0.85 at scale M_ρ²/4=0.15 GeV². In addition, employing this suppression factor, we present predictions for coherent ρ(2S), ω(1S,2S) and ϕ(1S,2S) photoproduction observables using the holographic vector meson wave functions.

• Author: Cheryl Henkels; Emmanuel G. de Oliveira; Roman Pasechnik; Haimon Trebien
• Department/s: Particle and nuclear physics; Computational Chemistry
• Publishing year: 2025-03
• Language: English
• Publication/Series: Nuclear Physics A
• Volume: 1055
• Links: http://dx.doi.org/10.1016/j.nuclphysa.2025.123018
• Document type: Journal article
• Publisher: Elsevier
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0375-9474