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Chemical freeze-out of light nuclei in high energy nuclear collisions and resolution of the hyper-triton chemical freeze-out puzzle

Authors: K.A. Bugaev, O.V. Vitiuk, B.E. Grinyuk, N.S. Yakovenko, E.S. Zherebtsova, Violetta Sagun, O.I. Ivanytskyi, D.O. Savchenko, L.V. Bravina, D.B. Blaschke, G.R. Farrar, S. Kabana, S.V. Kuleshov, E.G. Nikonov, A.V. Taranenko, E.E. Zabrodin, G.M. Zinovjev

Ref.: J. Phys.: Conf. Ser., Proceedings of the 5th International Conference on Particle Physics and Astrophysics (ICPPA-2020), 5-9 October 2020, Moscow, Russian Federation 1690, 012123 (2020)

Abstract: We present a summary of the recent results obtained with the novel hadron resonance gas model with the multicomponent hard-core repulsion which is extended to describe the mixtures of hadrons and light (anti-, hyper-)nuclei. A very accurate description is obtained for the hadronic and the light nuclei data measured by STAR at the center of mass collision energy 200 GeV and by ALICE at the center of mass collision energy 2.76 TeV. The most striking result discussed here is that for the most probable chemical freeze-out scenario for the STAR energy the found parameters allow us to reproduce the values of the experimental ratios hyper-triton without fitting.

DOI: 10.1088/1742-6596/1690/1/012123