Publication : t14/067
Eccentricity distributions in nucleus-nucleus collisions
Yan Li (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Poskanzer A.M. (Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA)
Abstract:Année de publication : 2014
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.
Revue : Phys. Rev. C 90 024903 (2014)
DOI : 10.1103/PhysRevC.90.024903
Preprint : arXiv:1405.6595
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
