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arXiv 0907.2723nucl-th
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在RHIC和LHC生产$J/ψ$的快速依赖性

Rapidity Dependence of $J/ψ$ Production at RHIC and LHC

Yunpeng Liu, Zhen Qu, Nu Xu, Pengfei Zhuang

摘要:

用热介质中具有初始产生和连续再生的三维输运方程描述重离子碰撞中粲偶素的运动。在RHIC观测到的前向快度比中快度明显更强的$J/ψ$抑制现象,即所谓的$J/ψ$之谜,可以用两种产生机制之间的竞争来解释。然而,在大型强子对撞机上,$J/ψ$产生的快度依赖性是由再生过程决定的。

英文摘要:

The motion of charmonium in heavy ion collisions is described by a three dimensional transport equation with initial production and continuous regeneration in hot medium. The observation of apparently stronger $J/ψ$ suppression at forward rapidity compared to that at midrapidity, so called $J/ψ$ puzzle at RHIC, can well be explained by the competition between the two production mechanisms. At LHC, however, the rapidity dependence of the $J/ψ$ production is dominated by the regeneration process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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