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arXiv · 2310.06965

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

Cheryl Henkels·Emmanuel G. de Oliveira·Roman Pasechnik·Haimon Trebien
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Abstract

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 $F_2$ (E665) and $\rho$ meson photoproduction (ALICE) data. We achieve a good description of the available data points with $R_G = 0.85$ at scale $M_\rho^2/4 = 0.15$ GeV$^2$. In addition, employing this suppression factor, we present predictions for coherent $\rho(2S)$, $\omega(1S,2S)$ and $\phi(1S,2S)$ photoproduction observables using the holographic vector meson wave functions.

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Cheryl Henkels, Emmanuel G. de Oliveira, Roman Pasechnik, Haimon Trebien. 2023-10-10. Coherent photoproduction of light vector mesons off nuclear targets in the dipole picture. https://doi.org/10.1016/j.nuclphysa.2025.123018

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