This is the written proceeding for the LEAP 2018 Conference, that was held in Paris. It will be published in 'Hyperfine interaction'. To be sent before May 16, 2018. The \PANDA experiment is a core project of the future Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt. It will investigate antiproton-proton annihilations on nucleons and nuclei with the aim to explore fundamental questions in the non-perturbative regime of QCD as the origin of the hadron mass. The multi-purpose detector is currently under construction. The intense and high quality anti-proton beam will span the momentum range between 1.5 and 15 GeV/$c$. Properties of hadrons, leptons, and photons in the final states will be determined with very high precision. A rich physics program including the study of resonances in the charmonium and open charm region, electromagnetic form factors, and hypernuclear physics is planned. The worldwide collaboration gathers today more than 450 physicists from 60 institutions in 19 countries. An overview of the \PANDA experiment is given, focussing on aspects of the physics program that will be investigated as soon as the facility becomes operational.

The future experiment \PANDA@FAIR is a fix-target $\bar p p$ experiment that will run in the energy range [1.5-15.0] GeV, and it is supposed to reach a peak luminosity up to 2$\cdot$10$^{31}$ cm$^{-2}$ s$^{-1}$ in the first phase of data taking. This will allow to perform a number of analyses which are suppressed or forbidden at running experiments, especially in the sector of charm and charmonium physics. Investigating narrow resonances, measure their width and understand their properties is the core of the \PANDA~physics program in the {\it day-one} experiment. This contribution reports about the feasibility studies to measure the width of very narrow states by performing a threshold scan. The case of the $D_{0s}^*(2317)^+$ will be discussed with new theoretical developments to evaluate the cross section and the rate for the process $\bar p p \rightarrow D_s^- D_{s0}^*(2317)^+$, as an original contribution of the \PANDA~physics program. Eventually new resonances with $\bar c c \bar s s$ quark content could be investigated in the $D_s^- D_{s0}^*(2317)^+$ invariant mass system. We recall that recently the LHCb experiment published about four resonances with the above mentioned quark content in the $J/\psi \phi$ invariant mass system through B decays, only. Therefore the hereby presented study might be of high interest from experimental as well as theoretical point of view, and offers a complimentary search in a different reaction mechanism.