PA-PRO-2016-001

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 behaviour
of hyperons and – for the first time – of antihyperons in nuclear systems can be studied under well
controlled conditions. The exclusive production of Lambda-antiLambda and Sigma-antiLambda 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
gamma-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 Cascade atoms are feasible and even the production of
Omega-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 Omega-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.