Speaker
Description
A non-extensive (3+1)-dimensional hydrodynamic model for multi-particle production processes, NEX-CLVisc, is developed in the framework of the CLVisc package where the viscous corrections are turned off. It is based on non-extensive statistics and assumes that non-extensive effects exist in the initial conditions, the equation of state and the hadron kinetic freeze-out procedure. The model is then applied to investigate the pseudo-rapidity ($\eta$) distribution, the transverse momentum ($p_{\rm T}$) spectra and the $p_{\rm T}$-differential elliptic flow ($v_2$) of charged particles in Pb-Pb collisions at $\sqrt{s_{NN}}=$ 2.76 TeV and 5.02 TeV. It is found that the model can reasonably reproduce the $\eta$ distribution and the charged-particle spectra in a $p_{\rm T}$ range up to 6–8 GeV/c. When compared with the ideal hydrodynamic model, the $p_{\rm T}$-differential $v_2$ of charged particles is reduced in the NEX-CLVisc model, which is similar to that observed in the viscous hydrodynamic model. Moreover, the extension of the applicable range for $p_{\rm T}$-differential $v_2$ is not as large as that indicated by the particle $p_{\rm T}$ spectra.
