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 estimate the production cross sections for kaons and demonstrate that the shapes of the ${p}_{T}$ dependence are in agreement with available experimental data. We also analyze the self-normalized yields of strange hadrons as a function of multiplicity of coproduced hadrons, and find that the predictions are in agreement with the faster-than-linear growth seen in experimental data. Our description is largely parameter free and extends our previous studies dedicated to the explanation of multiplicity enhancement of quarkonia, as well as open heavy flavor $D$ and $B$ mesons.
Highlights
In the left panel of we show the results for production cross section in the kinematics of ongoing and planned experiments
Since the dipole approach provides a reasonable description of the strangeness production in the large-pT kinematics, we can apply it to the study of the dependence on the number of charged particles Nch coproduced together with a given strange hadron
In this paper we studied the production of strange hadrons in the color dipole approach
Summary
Since the early experiments at RHIC and SPS [1,2,3,4,5,6], the production of strangeness in hadronic collisions has been used as one of the probes of quark-gluon plasma (QGP) formation and, described in the framework of QGP-inspired hydrodynamic models [7,8,9,10,11,12,13,14,15,16,17,18,19,20,21]. This observable requires careful understanding of strangeness production in two channels, as well as possible contributions of cold nuclear matter effects in heavy-ion collisions Another observable, which is usually attributed to QGP, is the enhancement of strangeness in events with large multiplicity of coproduced hadrons. In the kinematics of very large transverse momenta pT of produced strange hadrons, the latter variable effectively plays the role of a hard scale, partially justifying the use of such perturbative tools For this reason, in what follows we will try to extend the earlier description of the charm sector to the strangeness production in large-pT kinematics.
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