J/Ψ measurements in Au+Au and p+p collisions at √sNN=200 GeV

被引：1
|
作者：
Gonzalez, J. E. [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2006年 / 32卷 / 12期
关键词：
QUARK-GLUON PLASMA;
D O I：
10.1088/0954-3899/32/12/S68
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In a system of deconfined quarks and gluons heavy quarkonium states are expected to be the subject of dissociation via static mechanisms such as colour screening or dynamic mechanisms such as gluon scatterings. This leads to a suppression of hidden charm states, such as J/psi. On the other hand, statistical hadronization models predict an enhanced production of hidden charm states for sufficiently high charm densities. We present first preliminary STAR results on J/psi. production via the reconstruction of electron-positron decay pairs in p + p and Au + Au collisions at root s(NN) = 200 GeV. The implications of our measurements to models that predict copious J/psi. production via statistical hadronization are discussed.
引用
收藏
页码：S521 / S524
页数：4
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