Y production as a probe for early state dynamics in high energy nuclear collisions at RHIC

被引:61
|
作者
Liu, Yunpeng [1 ]
Chen, Baoyi [1 ]
Xu, Nu [2 ]
Zhuang, Pengfei [1 ]
机构
[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA
关键词
Relativistic heavy-ion collisions; Quark-gluon plasma; Heavy flavor; TRANSVERSE-MOMENTUM DISTRIBUTION; SHORT-DISTANCE ANALYSIS; HEAVY-ION COLLISIONS; J/PSI SUPPRESSION; QUARK SYSTEMS; ELLIPTIC FLOW; PB-PB; SPS; DEPENDENCE; TRANSPORT;
D O I
10.1016/j.physletb.2011.01.026
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Y production in heavy ion collisions at RHIC energy is investigated. While the transverse momentum spectra of the ground state Y(1s) are controlled by the initial state Cronin effect, the excited b (b) over bar states are characterized by the competition between the cold and hot nuclear matter effects and sensitive to the dissociation temperatures determined by the heavy quark potential. We emphasize that it is necessary to measure the excited heavy quark states in order to extract the early stage information in high energy nuclear collisions at RHIC. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:32 / 36
页数:5
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