Dissipative corrections to particle spectra and anisotropic flow from a saddle-point approximation to kinetic freeze out

Christian Lang, Nicolas Borghini
2014 European Physical Journal C: Particles and Fields  
A significant fraction of the changes in momentum distributions induced by dissipative phenomena in the description of the fluid fireball created in ultrarelativistic heavy-ion collisions actually take place when the fluid turns into individual particles. We study these corrections in the limit of a low freeze-out temperature of the flowing medium, and we show that they mostly affect particles with a higher velocity than the fluid. For these, we derive relations between different flow
more » ... rent flow harmonics, from which the functional form of the dissipative corrections could ultimately be reconstructed from experimental data.
doi:10.1140/epjc/s10052-014-2955-7 fatcat:rjowgc52ibh7bltbnlxfvvxuqm