# Suppression versus enhancement of heavy quarkonia in pA collisions

@article{Kopeliovich2017SuppressionVE,
title={Suppression versus enhancement of heavy quarkonia in pA collisions},
author={Boris Z. Kopeliovich and Ivan Schmidt and Marat Siddikov},
journal={Physical Review C},
year={2017},
volume={95},
pages={065203}
}
• Published 24 January 2017
• Physics
• Physical Review C
We describe production of heavy quarkonia in pA collisions within the dipole approach, assuming dominance of the perturbative color-singlet mechanism (CSM) in the pT -integrated cross section. Although accounting for a nonzero heavy Q-Q̄ separation is a higher twist correction, usually neglected, we found it to be the dominant source of nuclear effects, significantly exceeding the effects of leading twist gluon shadowing and energy loss. Moreover, this contribution turns out to be the most…
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