Strangeness production in high-multiplicity events

TL;DR

This paper investigates strangeness production in high-multiplicity proton-proton collisions at large transverse momenta, using the color dipole model to match experimental data and explore multiplicity effects.

Contribution

It provides a largely parameter-free analysis of strange hadron yields and their dependence on multiplicity, extending previous work on quarkonia and heavy mesons.

Findings

Agreement with experimental $p_{T}$-dependence of kaon production

Reproduction of faster-than-linear growth of strange hadron yields with multiplicity

Complementary to previous studies on quarkonia and heavy mesons

Abstract

In this paper we analyze in detail the production of strangeness in proton-proton collisions in the kinematics of large transverse momenta $p_{T}$ of produced hadrons. Using the color dipole framework, we estimated the production cross-sections for kaons, and demonstrated that the shapes of the $p_{T}$-dependence are in agreement with available experimental data. We also analyzed the self-normalized yields of strange hadrons as a function of multiplicity of co-produced hadrons, and found that the predictions are in agreement with the faster-than-linear growth seen in experimental data. Our description is largely parameter-free and complements our previous studies dedicated to the explanation of multiplicity enhancement of quarkonia, as well as $D$- and $B$-mesons.