EPJ Web of Conferences (Jan 2019)

Transverse momentum spectra of mesons in p+p collisions at CERN SPS energies from the UrQMD transport model

  • Ozvenchuk Vitalii,
  • Rybicki Andrzej

DOI
https://doi.org/10.1051/epjconf/201919905003
Journal volume & issue
Vol. 199
p. 05003

Abstract

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The UrQMD transport model, version 3.4, is used to study the new experimental data on total yields, rapidity distributions and transverse momentum spectra of π±, K±, p and p¯$\bar p$ produced in inelastic p + p interactions at SPS energies, recently published by the NA61/SHINE Collaboration. The comparison of model predictions to these new measurements is presented as a function of collision energy. In addition, we compare with the experimental data the results on kaon-over-pion multiplicity ratio and the inverse slope parameter of negative kaons produced at midrapidity. A complicated pattern of discrepancies between the experimental data and the UrQMD transport model is apparent. We conclude that new experimental data analyzed in this contribution still constitute a challenge for the present version of the model.