scholarly journals Second virial coefficients of light nuclear clusters and their chemical freeze-out in nuclear collisions

2020 ◽  
Vol 56 (11) ◽  
Author(s):  
K. A. Bugaev ◽  
O. V. Vitiuk ◽  
B. E. Grinyuk ◽  
V. V. Sagun ◽  
N. S. Yakovenko ◽  
...  
Keyword(s):  
Virial Coefficients ◽  
Second Virial Coefficients ◽  
Nuclear Collisions ◽  
Nuclear Clusters ◽  
Chemical Freeze ◽  
Freeze Out

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

2020 ◽  
Vol 1690 ◽  
pp. 012123
Author(s):  
K A Bugaev ◽  
O V Vitiuk ◽  
B E Grinyuk ◽  
N S Yakovenko ◽  
E S Zherebtsova ◽  
...  
Keyword(s):  
High Energy ◽  
Light Nuclei ◽  
Nuclear Collisions ◽  
Chemical Freeze ◽  
Freeze Out

scholarly journals Resolving the hyper-triton yield description puzzle in high energy nuclear collisions

2021 ◽  
Vol 57 (2) ◽  
Author(s):  
O. V. Vitiuk ◽  
K. A. Bugaev ◽  
E. S. Zherebtsova ◽  
D. B. Blaschke ◽  
L. V. Bravina ◽  
...  
Keyword(s):  
Collision Energy ◽  
Hard Core ◽  
Star Collaboration ◽  
High Energy ◽  
Nuclear Collisions ◽  
Cluster Data ◽  
New Strategy ◽  
Nuclear Cluster ◽  
Chemical Freeze ◽  
Freeze Out

AbstractThe recently developed hadron resonance gas model with multicomponent hard-core repulsion is used to address and resolve the long standing problem to describe the light nuclear cluster multiplicities including the hyper-triton measured by the STAR Collaboration, known as the hyper-triton chemical freeze-out puzzle. An improved description for the hadronic and light nuclear cluster data measured by STAR at the collision energy $$\sqrt{s_{NN}} =200$$ s NN = 200 GeV and by ALICE at $$\sqrt{s_{NN}} =2.76$$ s NN = 2.76 TeV is obtained. This is achieved by applying a new strategy of analyzing the light nuclear cluster data and by using the value for the hard-core radius of the (anti-)$$\varLambda $$ Λ hyperons found in earlier work. One of the most striking results of the present work is that for the most probable scenario of chemical freeze-out for the STAR energy the obtained parameters allow to simultaneously reproduce the values of the experimental ratios $$S_3$$ S 3 and $${\overline{S}}_3$$ S ¯ 3 which were not included in the fit.

The Bender Equation of State and Virial Coefficients

2000 ◽  
Vol 65 (9) ◽  
pp. 1464-1470 ◽  
Author(s):  
Anatol Malijevský ◽  
Tomáš Hujo
Keyword(s):  
Equation Of State ◽  
Virial Coefficient ◽  
Virial Coefficients ◽  
Low Density ◽  
Second Virial Coefficients ◽  
The Third ◽  
Temperature Dependences ◽  
Experimental Values

The second and third virial coefficients calculated from the Bender equation of state (BEOS) are tested against experimental virial coefficient data. It is shown that the temperature dependences of the second and third virial coefficients as predicted by the BEOS are sufficiently accurate. We conclude that experimental second virial coefficients should be used to determine independently five of twenty constants of the Bender equation. This would improve the performance of the equation in a region of low-density gas, and also suppress correlations among the BEOS constants, which is even more important. The third virial coefficients cannot be used for the same purpose because of large uncertainties in their experimental values.

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