Charm and Hidden Charm Scalar Resonances in Nuclear Matter

We study the properties of the scalar charm resonances Ds0(2317) and D0(2400), and the theoretical hidden charm state X(3700) in nuclear matter. We find that for the Ds0(2317) and X(3700) resonances, with negligible and small width at zero density, respectively, the width becomes about 100 MeV and 200 MeV at normal nuclear matter density, accordingly. For D0(2400) the change in width is relatively less important. We discuss the origin of this new width and trace it to reactions occurring in the nucleus. We also propose a possible experimental test for those modifications in nuclear matter, which will bring valuable information on the nature of those scalar resonances and the interaction of D mesons with nucleons.