Properties of D mesons in nuclear matter within a self-consistent coupled-channel approach

The spectral density of the $D$ meson in the nuclear environment is studied within a self-consistent coupled-channel approach assuming a separable potential for the bare meson-baryon interaction. The $DN$ interaction, described through a $G$ matrix, generates dynamically the ${\ensuremath{\Lambda}}_{c}(2593)$ resonance. This resonance is the charm counterpart of the $\ensuremath{\Lambda}(1405)$ resonance generated from the $s$-wave $\overline{K}N$ interaction in the $I=0$ channel. The medium modification of the $D$-meson spectral density due to the Pauli blocking of intermediate states as well as due to the dressing of the $D$ mesons, nucleons, and pions is investigated. We observe that the inclusion of coupled-channel effects and the self-consistent dressing of the $D$ meson results in an overall reduction of the in-medium $D$-meson changes compared to previous work which neglected those effects.