Open-charm mesons in nuclear matter at finite temperature beyond the zero-range approximation

The properties of open charm mesons, D, D, Ds, and Ds in nuclear matter at finite temperature are studied within a self-consistent coupled-channel approach. The interaction of the low-lying pseudoscalar mesons with the ground-state baryons in the charm sector is derived from a t-channel vector-exchange model. The in-medium scattering amplitudes are obtained by solving the Lippmann-Schwinger equation at finite temperature including Pauli blocking effects, baryon dressing, as well as D, D, Ds, and Ds self-energies taking their mutual influence into account. We find that the in-medium properties of the D meson are affected by the Ds-meson self-energy through the intermediate DsY loops coupled to DN states. Similarly, dressing the D meson in the DY loops has an influence over the properties of the Ds meson.