PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - Heavy Ion Physics
$J/\psi$ production in hadron scattering: three-pomeron contribution
M. Siddikov,* E. Levin, I. Schmidt
*corresponding author
Full text: Not available
Abstract
We argue that the inclusive $J/\psi$ production in proton-proton collisions might get significant contribution from fusion of three gluons. We analyze numerically the subprocesses with direct formation of $J/\psi$ from three gluons, and with formation of $J/\psi+g$ states. We found that numerically the three-gluon fusion gives a substantial contribution to the $J/\psi$ production, and is able to describe the experimentally observed shapes of the rapidity, momenta and multiplicity distributions. We also demonstrate that description of rapid multiplicity growth seen in experiment presents a challenge in approaches based on gluon-gluon fusion. For this reason we believe that the available multiplicity dependence data provide a strong evidence in favor of the 3-gluon mechanism of $J/\psi$ production.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.