Abstrakt
New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessing in Drell-Yan processes experimental asymmetries related to cross-section in which the parton distribution function (PDF) only appear, without any contribution from fragmentation function; such processes are not affected by the chiral suppression of the transversity function h1(x).
Spin asymmetries in hyperon production and Single Spin Asymmetries are discussed as well, together with further items like electric and magnetic nucleonic form factors and open charm production. Counting rates estimations are provided for each physical case.
The sketch of a possible experimental apparatus is proposed.