Many facets of strangeness nuclear physics with stored antiprotons

Stored antiprotons beams in the GeV range represent a unparalleled factory for hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of strange hadronic systems with unprecedented precision. The behavior of hyperons and — for the first time — of antihyperons in nuclear systems can be studied under well controlled conditions. The exclusive production of ΛΛ-bar and Σ^-Λ-bar pairs in antiproton-nucleus interactions probe the neutron and proton distribution in the nuclear periphery and will help to sample the neutron skin. For the first time, high resolution γ-spectroscopy of doubly strange nuclei will be performed, thus complementing measurements of ground state decays of double hypernuclei with mesons beams at J-PARC or possible decays of particle unstable hypernuclei in heavy ion reactions. High resolution spectroscopy of multistrange Ξ-atoms are feasible and even the production of Ω^--atoms will be within reach. The latter might open the door to the |s|=3 world in strangeness nuclear physics, by the study of the hadronic Ω^--nucleus interaction and the very first measurement of a spectroscopic quadrupole moment of a baryon which will be a benchmark test for our understanding of hadron structure. (author)