On dissociation of heavy mesons in a hot quark–gluon plasma

✍ Scribed by Fabio Dominguez; Bin Wu

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 206 KB
• Volume: 818
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2008.12.006

✦ Synopsis

We compare two mechanisms for the dissociation of heavy mesons in an infinite quark-gluon plasma: dynamic Debye screening and multiple scattering. Using the uncertainty principle inspired by a Schrödingerlike equation, we find that the criterion a B 1/μ

2 ) is parametrically true both for the dissociation of fast moving heavy mesons with a size a B due to dynamic Debye screening as well as for mesons at rest in the medium. In contrast, we find that the criterion for the dissociation of heavy mesons due to uncorrelated multiple scattering is parametrically a B 1 [γ α eff ln 1 α eff ] 1/3 T . Therefore, multiple scattering is a more efficient mechanism for the dissociation of heavy mesons in an infinite hot plasma.