Medium Density and Parton Energy Loss in Gold--Gold Collisions from the Recombination Model
YANG Chun-Bin1,2, TAN Zhi-Guang1
1Institute of Particle Physics, Huazhong Normal University, Wuhan 430079
2Institute of Theoretical Science, University of Oregon, Eugene, OR 97403-5203, USA
Medium Density and Parton Energy Loss in Gold--Gold Collisions from the Recombination Model
YANG Chun-Bin1,2;TAN Zhi-Guang1
1Institute of Particle Physics, Huazhong Normal University, Wuhan 430079
2Institute of Theoretical Science, University of Oregon, Eugene, OR 97403-5203, USA
Abstract： The pion production at mid-rapidity in gold--gold collisions at √s=200GeV is investigated by the parton recombination model. The density of the hot medium produced in the collisions and the hard
parton energy loss effect are obtained by fitting the experimental data. Both of them are found to have power-law dependence on the number of binary collisions. The implication of such dependence on the nuclear modification factor is discussed.
(Quark deconfinement, quark-gluon plasma production, and phase transitions)
引用本文:
YANG Chun-Bin;TAN Zhi-Guang. Medium Density and Parton Energy Loss in Gold--Gold Collisions from the Recombination Model[J]. 中国物理快报, 2004, 21(11): 2159-2162.
YANG Chun-Bin, TAN Zhi-Guang. Medium Density and Parton Energy Loss in Gold--Gold Collisions from the Recombination Model. Chin. Phys. Lett., 2004, 21(11): 2159-2162.
2004, Vol. 21 
