Hydrodynamic elliptic and triangular flow in Pb-Pb collisions at sqrt(s)=2.76ATeV
Nuclear Theory
2012-10-08 v1 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
It is shown that a simultaneous comparison of both elliptic and triangular flow from (2+1)-dimensional viscous fluid dynamics with recent measurements in Pb+Pb collisions at the Large Hadron Collider (LHC) favors a small specific shear viscosity (eta/s)_QGP approximately equal to 1/(4pi) for the quark-gluon plasma. Using this viscosity value, the relative magnitude of the elliptic and triangular flow is well described with Monte-Carlo Glauber (MC-Glauber) initial conditions while Monte-Carlo Kharzeev-Levin-Nardi (MC-KLN) initial conditions require twice as large viscosity to reproduce the elliptic flow and then underpredict triangular flow by about 30%.
Cite
@article{arxiv.1110.3033,
title = {Hydrodynamic elliptic and triangular flow in Pb-Pb collisions at sqrt(s)=2.76ATeV},
author = {Zhi Qiu and Chun Shen and Ulrich W. Heinz},
journal= {arXiv preprint arXiv:1110.3033},
year = {2012}
}
Comments
5 pages, 4 figures