Eccentricity distributions in nucleus-nucleus collisions
Nuclear Theory
2014-09-04 v2 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We propose a new parametrization of the distribution of the initial eccentricity in a nucleus-nucleus collision at a fixed centrality, which we name the Elliptic Power distribution. It is a two-parameter distribution, where one of the parameters corresponds to the intrinsic eccentricity, while the other parameter controls the magnitude of eccentricity fluctuations. Unlike the previously used Bessel- Gaussian distribution, which becomes worse for more peripheral collisions, the new Elliptic Power distribution fits several Monte Carlo models of the initial state for all centralities.
Cite
@article{arxiv.1405.6595,
title = {Eccentricity distributions in nucleus-nucleus collisions},
author = {Li Yan and Jean-Yves Ollitrault and Arthur M. Poskanzer},
journal= {arXiv preprint arXiv:1405.6595},
year = {2014}
}
Comments
Revised; Appendix C added. The published version