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arXiv · 0709.3637

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

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

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.

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Su Houng Lee, Kazuaki Ohnishi, Shigehiro Yasui, In-Kwon Yoo, Che Ming Ko. 2008-06-10. Λ_{c} enhancement from strongly coupled quark-gluon plasma. https://doi.org/10.1103/physrevlett.100.222301

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