Gluon Shadowing and Hadron Production at RHIC
Abstract
Hadron multiplicity in the central rapidity region of high-energy heavy-ion collisions is investigated within a two-component mini-jet model which consists of soft and semi-hard particle production. The hard contribution from mini-jets is reevaluated using the latest parameterization of parton distributions and nuclear shadowing. The energy dependence of the experimental data from RHIC requires a strong nuclear shadowing of the gluon distribution in this model. The centrality dependence of the hadron multiplicity at GeV is reproduced well with the impact-parameter dependent parton shadowing. However, energy variation of the centrality dependence is needed to distinguish different particle production mechanisms such as the parton saturation model.
Cite
@article{arxiv.nucl-th/0110075,
title = {Gluon Shadowing and Hadron Production at RHIC},
author = {Shi-yuan Li and Xin-Nian Wang},
journal= {arXiv preprint arXiv:nucl-th/0110075},
year = {2009}
}
Comments
6 pages in RevTex format, 5 figures