Monte Carlo simulations of Upsilon meson production
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Pre-published on:
January 18, 2021
Published on:
April 15, 2021
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.
DOI: https://doi.org/10.22323/1.390.0578
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.