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

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

2007-09-23

arxiv.org/abs/0709.3637v3

Phys.Rev.Lett.100:222301,2008

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevLett.100.222301

We propose the enhancement of $\Lambda_{c}$ 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 $\Lambda_{c}$ production in comparison with the normal three-body collision among independent $c$, $u$ and $d$ quarks. In the coalescence model, we find that the $\Lambda_{c}/D$ yield ratio is enhanced substantially due to the diquark correlation.

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