Journal article

Publication year: 2004

Pages: 597-606

Journal: Journal of Physics G: Nuclear and Particle Physics

Volume number: 30

Issue number: 5

ISSN: 0954-3899

eISSN: 1361-6471

Open access status: Green

DOI Link: https://doi.org/10.1088/0954-3899/30/5/004

Publisher: IOP Publishing

Abstract: 
Various experimental data at AGS, SPS and RHIC energies on hadron particle yields for central heavy ion collisions are investigated by employing a generalized statistical density operator that allows for a well-defined anisotropic local momentum distribution for each particle species, specified by a common streaming velocity parameter. The individual particle ratios are rather insensitive to a change in this new intensive parameter. This leads to the conclusion that the reproduction of particle ratios by a statistical treatment does not imply the existence of a fully isotropic local momentum distribution at hadrochemical freeze-out, i.e. a state of almost complete thermal equilibrium.

Harvard Citation style: Schenke, B. and Greiner, C. (2004) Statistical description with anisotropic momentum distributions for hadron production in nucleus-nucleus collisions, Journal of Physics G: Nuclear and Particle Physics, 30(5), Article PII S0954-3899(04)75683-2. pp. 597-606. https://doi.org/10.1088/0954-3899/30/5/004

APA Citation style: Schenke, B., & Greiner, C. (2004). Statistical description with anisotropic momentum distributions for hadron production in nucleus-nucleus collisions. Journal of Physics G: Nuclear and Particle Physics. 30(5), Article PII S0954-3899(04)75683-2, 597-606. https://doi.org/10.1088/0954-3899/30/5/004