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

Lang, Christian (Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501, Bielefeld, Germany) ; Borghini, Nicolas (Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501, Bielefeld, Germany)

16 July 2014

Abstract: 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 harmonics, from which the functional form of the dissipative corrections could ultimately be reconstructed from experimental data.


Published in: EPJC 74 (2014) 2955
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-014-2955-7
License: CC-BY-3.0



Back to search

Fulltext:
Download fulltextXML Download fulltextPDF (PDFA)