HEAVY QUARK COLLISIONAL ENERGY LOSS IN THE QUARK-GLUON PLASMA INCLUDING FINITE RELAXATION TIME

M. ELIAS; J. PERALTA RAMOS; E. CALZETTA

PHYSICAL REVIEW D - PARTICLE AND FILDS

APS

Año: 2014 vol. 90 p. 140381 - 140385

0556-2821

In this paper, we calculate the soft-collisional energy loss of heavy quarks traversing the viscous quark-gluon plasma including the effects of a finite relaxation time $ au_pi$ on the energy loss. We find that the collisional energy loss depends appreciably on $ au_pi$. In particular, for typical values of the viscosity-to-entropy ratio, we show that the energy loss obtained using $ au_pi eq 0$ can be $sim$ 10$%$ larger than the one obtained using $ au_pi=0$. Moreover, we find that the energy loss obtained using the kinetic theory expression for $ au_pi$ is much larger that the one obtained with the $ au_pi$ derived from the Anti de Sitter/Conformal Field Theory correspondence. Our results may be relevant in the modeling of heavy quark evolution through the quark-gluon plasma.