Author:
Chen Jia,Deng Jian,Tang Zebo,Xu Zhangbu,Yi Li
Abstract
In this talk, we investigate the collision energy and particle species dependence of kinetic freeze-out properties in relativistic heavy ion collisions from √SNN = 7.7 - 200 GeV at Relativistic Heavy Ion Collider (RHIC) and 2.76 TeV at the Large Hadron Collider (LHC) with Tsallis Blast-Wave (TBW) model. Strangeness and non-strange particles show a similar radial flow, while the strange hadrons have higher temperature and smaller non-equilibrium degree. Strangeness approaches equilibrium more quickly than non-strange particles from peripheral to central collisions. The kinetic freeze-out temperature of non-strange particles in central collisions decreases from RHIC to LHC energies, while strangeness does not show this behavior. Finally we discuss the system bulk viscosity dependence on collision energy.
Reference14 articles.
1. Rafelski J. and Muller B., Phys. Rev. Lett. 48 (1982), 1066 [erratum: Phys. Rev. Lett. 56 (1986), 2334]
2. Adam J. et al. [STAR Collaboration], Phys. Rev. C102, 034909 (2020)
3. Schnedermann E., Sollfrank J. and Heinz U. W., Phys. Rev. C48, 2462 (1993)
4. Schnedermann E. and Heinz U. W., Phys. Rev. C50, 1675 (1994)
5. Wilk G. and Wlodarczyk Z., Eur. Phys. J. A40, 299 (2009)