The propagation of heavy flavor through the quark gluon plasma has been treated commonly within the framework of Langevin dynamics, i.e. assuming the heavy flavor momentum transfer is much smaller than the light one. On the other hand a similar suppression factor R-AA has been observed experimentally for light and heavy flavors. We present a thorough comparison in terms of nuclear suppression, R-AA, elliptic flow, v(2), and c (c) over bar. back to back correlation between the Langevin equation and the full collisional Boltzmann collision integral within the framework of Boltzmann transport equation. We have shown that the Langevin dynamics overestimates the interaction and even for a fixed RAA the full two-body collision integral shows that the elliptic flow is larger with respect to that predicted by a Langevin dynamics. Furthermore we have found that Boltzmann approach gives rise to a larger spreading of correlation in comparison with the Langevin approach.
|Titolo:||Heavy Flavor Suppression, Flow and Azimuthal Correlation: Boltzmann vs Langevin|
|Autori interni:||GRECO, VINCENZO|
|Data di pubblicazione:||2014|
|Rivista:||JOURNAL OF PHYSICS. CONFERENCE SERIES|
|Appare nelle tipologie:||1.1 Articolo in rivista|