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Ratio of cross-sections of kaons to pions produced in pp collisions as a function of \(\sqrt{s}\)

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Abstract

A calculation of the inclusive spectra of pions and kaons produced in pp collisions as functions of their transverse momentum \(p_T\) at mid-rapidity is presented within the self-similarity approach. A satisfactory description of the data within a wide range of initial energies is presented. We focus mainly on the ratio of cross-sections of \(K^\pm \) to \(\pi ^\pm \) mesons produced in pp collisions as a function of \(\sqrt{s}\). A fast rise of this ratio, when the initial energy increases starting from the kaon production threshold up to \(\sqrt{s}\simeq \) 20–30 GeV, is revealed together with its very slow increase up to LHC energies. The energy dependence of this ratio is due to the conservation laws of four-momenta and quantum numbers of the initial and produced hadrons. The more or less satisfactory agreement of these ratios with NA61/SHINE, RHIC and LHC data is demonstrated.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The article is the theoretical one, therefore we use the data published in a literature.]

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Acknowledgements

We are very grateful to K.A. Bugaev, M. Gumberidze, M. Gazdzicki, R. Holzmann, S. Pulawski, G.Pontecorvo for extremely helpful discussions.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Joliot Curie 6, 141980, Dubna, Russian Federation

    G. I. Lykasov, A. I. Malakhov & A. A. Zaitsev

Authors
  1. G. I. Lykasov
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  2. A. I. Malakhov
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  3. A. A. Zaitsev
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Correspondence to G. I. Lykasov.

Additional information

Communicated by Laura Tolos.

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Lykasov, G.I., Malakhov, A.I. & Zaitsev, A.A. Ratio of cross-sections of kaons to pions produced in pp collisions as a function of \(\sqrt{s}\). Eur. Phys. J. A 57, 91 (2021). https://doi.org/10.1140/epja/s10050-021-00408-9

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