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arXiv 1602.01667hep-phnucl-exnucl-th
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夸克-胶子等离子体中的热粲和粲偶素产生

Thermal Charm and Charmonium Production in Quark Gluon Plasma

Kai Zhou, Zhengyu Chen, Carsten Greiner, Pengfei Zhuang

摘要:

研究了高能核碰撞中热粲产生对粲偶素再生的影响。通过求解Pb+Pb碰撞中粲夸克和粲偶素分布的动力学方程,计算了$J/Ψ$的整体和微分核修正因子$R_{AA}(N_{part})$和$R{AA}(p_t)$.由于热介质中的热粲产生,粲偶素的产生源从SPS、RHIC和LHC上最初产生的粲夸克转变为未来圆形对撞机(FCC)上的热产生的粲夸克,并且迄今观察到的$J/Ψ$抑制($R_{AA}<1$)将被FCC上低横动量的强增强($R_{AA}>1$)所取代。

英文摘要:

We study the effect of thermal charm production on charmonium regeneration in high energy nuclear collisions. By solving the kinetic equations for charm quark and charmonium distributions in Pb+Pb collisions, we calculate the global and differential nuclear modification factors $R_{AA}(N_{part})$ and $R{AA}(p_t)$ for $J/Ψ$s. Due to the thermal charm production in hot medium, the charmonium production source changes from the initially created charm quarks at SPS, RHIC and LHC to the thermally produced charm quarks at Future Circular Collider (FCC), and the $J/Ψ$ suppression ($R_{AA}<1$) observed so far will be replaced by a strong enhancement ($R_{AA}>1$) at FCC at low transverse momentum.

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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