PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Posters: Heavy Ions
Monte Carlo simulations of Upsilon meson production
J. Ceska,* J. Bielcik, L. Kosarzewski, M. Myska
*corresponding author
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Pre-published on: January 18, 2021
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Abstract
$\Upsilon$ meson production dependence on charged particle multiplicity involves the interplay between soft and hard QCD processes. Normalised multiplicity dependence is a meaningful tool for understanding the particle production mechanisms. The observed strong increase may be explained by multi-parton interactions, string percolation or color glass condensate saturation effects. This paper presents Monte Carlo simulations of $\Upsilon$ meson production in proton-proton collisions at $\sqrt{s}$ = 500 GeV with PYTHIA and Herwig generators. The aim of the simulations is to explore the dependence of normalised $\Upsilon$ meson yield on normalised event multiplicity. The results show, that PYTHIA and Herwig (with the $k_{\perp}$ parameter value set to 20 GeV/c) can qualitatively describe the experimental data.
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