$J/\Psi$ mass shift and $J/\Psi$-nuclear bound state

Abstract

We calculate mass shift of the $J/\Psi$ meson in nuclear matter arising from the modification of $DD,D{D}^{\ast }$ and $D^{\ast }{D}^{\ast }$ meson loop contributions to the $J/\Psi$ self-energy. The estimate includes the in-medium $D$ and $D^{\ast }$ meson masses consistently. The $J/\Psi$ mass shift (scalar potential) calculated is negative (attractive), and complementary to the attractive potential obtained from the QCD color van der Waals forces. Some results for the $J/\Psi$-nuclear bound state energies are also presented.

Comments: 6 pages, talk given at "T(r)opical QCD II", September 26 - October 1, 2010, Cairns, Australia