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arXiv 0709.3637nucl-th
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强耦合夸克-胶子等离子体的Λ_{c}增强

Λ_{c} enhancement from strongly coupled quark-gluon plasma

Su Houng Lee, Kazuaki Ohnishi, Shigehiro Yasui, In-Kwon Yoo, Che Ming Ko

摘要:

我们提出在RHIC和LHC的重离子碰撞中增强$Λ_{c}$作为一种新的QGP信号。假设在临界温度附近强耦合QGP中存在稳定的束缚双夸克态,我们认为$c$夸克和$[ud]$双夸克的直接两体碰撞将导致$Λ_{c}$产生的增强,而不是独立的$c$,$u$和$d$夸克之间的正常三体碰撞.在并合模型中,我们发现由于双夸克关联的存在,$Λ_{c}/D$的产额比大大提高。

英文摘要:

We propose the enhancement of $Λ_{c}$ as a novel QGP signal in heavy ion collisions at RHIC and LHC. Assuming a stable bound diquark state in the strongly coupled QGP near the critical temperature, we argue that the direct two-body collision between a $c$ quark and a $[ud]$ diquark would lead to an enhanced $Λ_{c}$ production in comparison with the normal three-body collision among independent $c$, $u$ and $d$ quarks. In the coalescence model, we find that the $Λ_{c}/D$ yield ratio is enhanced substantially due to the diquark correlation.

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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