Eur. Phys. J. Plus (2021) 136: 1082
https://doi.org/10.1140/epjp/s13360-021-02089-1

Regular Article

Freezeout properties of different light nuclei at the RHIC beam energy scan

¹ School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China
² Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, 100049, Beijing, People’s Republic of China
³ Synergetic Innovation Center for Quantum Effects & Application, Hunan Normal University, 410081, Changsha, People’s Republic of China
⁴ Qufu Normal University, 273165, Qufu, Shandong, People’s Republic of China
⁵ Department of Physics, Abdul Wali Khan University Mardan, 23200, Mardan, Pakistan
⁶ Department of Mathematics and Science, Ajman University, PO Box 346, Ajman, UAE
⁷ Nonlinear Dynamics Research Center (NDRC), Ajman University, PO Box 346, Ajman, UAE

^a waqas_phy313@yahoo.com, waqas_phy313@ucas.ac.cn
^b gxpeng@ucas.ac.cn

Received: 6 July 2021
Accepted: 19 October 2021
Published online: 28 October 2021

Abstract

We study the transverse momentum spectra of light nuclei (deuteron, anti-deuteron and triton) produced in Gold-Gold (Au-Au) collisions in different centrality bins by the blast wave model with Tsallis statistics. The model results are in agreement with the experimental data measured by STAR Collaboration in special transverse momentum ranges. We extracted the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume. It is observed that kinetic freezeout temperature and transverse flow velocity increases initially, and then saturates from 14.5–39 GeV, while the kinetic freezeout volume increase initially up to 19.6 GeV but saturates from 19.6–39 GeV. This may indicate that the phase transition starts in part volume that ends in the whole volume at 39 GeV and the critical point may exists somewhere in the energy range of 14.5–39 GeV. The present work observed that the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume has a decreasing trend from central to peripheral collisions. We found the freezeout volume of triton is smaller than those of deuteron and anti-deuteron, which shows that triton freezeout earlier than that of deuteron and anti-deuteron.