Thursday·November 19, 2020

[Submitted on 18 Nov 2020]

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

K. A. Bugaev🇺🇦 · O. V. Vitiuk🇺🇦 · B. E. Grinyuk🇺🇦 · N. S. Yakovenko🇺🇦 · E. S. Zherebtsova🇷🇺 · V. V. Sagun🇺🇦 · O. I. Ivanytskyi🇺🇦 · D. O. Savchenko🇺🇦 · L. V. Bravina🇳🇴 · D. B. Blaschke🇷🇺 · G. R. Farrar🇺🇸 · S. Kabana🇨🇱 and 5 other authors

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 collision energy $\sqrt{s_{NN}}=200$ GeV and by ALICE at $\sqrt{s_{NN}}=2.76$ 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 $S_3$ and ${\overline{S}}_3$ without fitting.