Molecular and compact four-quark states

Abstract

We study charmonium ($c\bar{c}n\bar{n}$), bottomonium ($b\bar{b}n\bar{n}$) and exotic ($cc\bar{n}\bar{n}$ and $bb\bar{n}\bar{n}$) four-quark states by means of a standard non-relativistic quark potential model. We look for possible bound states. Among them we are able to distinguish between meson-meson molecules and compact four-quark states.

Comments: 4 pages, 1 figure, invited parallel talk at the 5th International Conference on Quarks and Nuclear Physics (QNP09), Beijing, September 21-26, 2009.To be published in Chinese Physics C