2024/10/02 by J. Óbertová, Óbertová, J., J. Nemchik +1 · 1 citation
Earth and Planetary Sciences · Engineering · Materials Science · #Cold Fusion and Nuclear Reactions #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Nuclear Materials and Properties #Nuclear reactor physics and engineering
paper · pdf · doi:10.48550/arxiv.2410.01668
openalex publication_date 2024/10/02 · openalex created_date 2024/10/29 · openalex updated_date 2026/07/28
We present for the first time a revised study of charmonium production in nuclear ultra-peripheral collisions (UPC) based on a rigorous Green function formalism. This formalism allows for the proper incorporation of the effects of color transparency, as well as the quantum coherence inherent in the higher twist quark shadowing related to the Q Q Fock component of the photon. The significance of this effect gradually decreases towards forward and/or backward rapidities. In the LHC kinematic region we additionally incorporate within the same formalism the leading twist gluon shadowing corrections related to higher multi-gluon photon fluctuations. They represent a dominant source of nuclear phenomena in the mid-rapidity region. Model predictions for the rapidity distributions dσ/dy are in good agreement with available UPC data on coherent charmonium production at RHIC and the LHC. They can also be verified by future measurements at the LHC, as well as at EIC.