Free Meson Seminars
Particle production in relativistic heavy-ion collisions: A consistent hydrodynamic approach
by Dr. V. Sreekanth (TIFR)
Tuesday, January 21, 2014
from
to
(Asia/Kolkata)
at Colaba Campus ( AG69 )
at Colaba Campus ( AG69 )
Description |
We derive relativistic viscous hydrodynamic equations using the generalized second law of thermodynamics for two different forms of the non-equilibrium single-particle distribution function. These equations are used to study thermal dilepton and hadron spectra within longitudinal scaling expansion of the matter formed in relativistic heavy-ion collisions. For consistency, the same non-equilibrium distribution function is used in the particle production prescription as in the derivation of the viscous evolution equations. Appreciable differences are found in the particle production rates corresponding to the two non-equilibrium distribution functions. We show that an inconsistent treatment of the non-equilibrium effects influences the particle production significantly, which may affect the extraction of transport properties of quark-gluon plasma. We also show that correction to the distribution function obtained using alternative Chapman-Enskog method ensures observed m_T^(-1/2) scaling of the longitudinal HBT radii, unlike the popular Grad's method expression. We also demonstrate the rapid convergence of this alternative method expansion up to second order. |