EPJ Web Conf.
Volume 276, 2023The 20th International Conference on Strangeness in Quark Matter (SQM 2022)
|Number of page(s)||4|
|Section||Light-flavor and Strangeness|
|Published online||01 March 2023|
Interpretation of particle yields in pp interactions at √S = 8.8, 12.3 and 17.3 GeV within statistical hadronization model
Institute of Experimental Physics, Faculty of Physics, University of Warsaw,
* e-mail: firstname.lastname@example.org
Published online: 1 March 2023
The statistical hadronization model ThermalFist was applied to numerous hadron yields measured in p+p collisions at √S = 8.8, 12.3 and 17.3 GeV, including recently published yields of ϕ-mesons, measured by the NA61/SHINE Collaboration. We consistently used the energy-dependent widths of Breit-Wigner mass distributions of hadronic resonances, as this approach was generally found to provide better agreement with experimental data. The well-established experimental ϕ meson yields are consequently accounted for (although neglecting this particle was found to improve the fit quality). The canonical treatment of particles with open strangeness with the grand canonical approach for non-strange particles gave a moderately reasonable agreement with the measured yields, only when the volume of strange particles was allowed to vary freely. In all the studied cases this volume is found to be greater than the canonical one.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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