Scope of the Workshop

Because of the FAIR project GSI will develop in the coming years to one of the leading centres in hadron physics. Antiproton beams of very high quality will allow experiments in various fields: Hadron spectroscopy (up to masses of 5.5 GeV/c²), investigation of hadron properties in nuclear matter, nucleon structure studies (General Parton Distributions (GPD),..), Hypernuclear experiments and a broad program on low energy antiprotons (Antihydrogen, antiprotonic atoms).The first three topics are intimately related to the progress in understanding QCD at long distances (non perturbative QCD). It is the aim of the proposed workshop to discuss the relation of observables in antiproton induced reactions to QCD. Theorists and experimental physicists both will participate, so that a close contact is established and realistic proposals are worked out. The theorists will be invited from all over the world,the experimentalists will mainly come from the international antiproton FAIR community, which at present consists of three collaborations (PANDA, PAX, FLAIR) with about 1000 scientists.

The theoretical talks will cover the most recent developments in understanding low energy QCD (Effectice Field Theories, Lattice calculations, Chiral Perturbation Theory, Model predictions,..) and will discuss properties of the nucleon in terms of structure functions and GPD's. The talks should be very specific concentrating on the antiproton physics possible at FAIR. They will deal with predictions for the hadron spectra and will discuss specifically the properties of exotic states like glueballs, hybrids and multiquark states. It is predicted, that hadronic properties, like masses and widths, are modified in nuclear surroundings. Such calculations, which are connected to the behaviour of matter under extreme conditions (Quark Gluon Plasma, High density nuclear matter in stars,..) will be discussed and their relevance to experimentally observable quantities will be highlighted. The third part of the theoretical talks will deal with the question how antiproton induced reactions can contribute to the investigations on the transverse nucleon structure and on GPD distributions. Processes, which will be discussed, are deeply virtual Compton scattering and meson production induced by antiproton proton reactions. The complementarity of such measurements with studies involving electromagnetic probes will play a major role in these contributions.

The experimental talks will introduce into the antiproton facility at GSI (HESR storage ring) and the detectors in preparation for the project. They will also highlight the present situation in hadron spectroscopy, where recently very exciting results have been achieved in experiments at B-and C-Factories and at Fermilab. The experimental situation regarding the modification of hadronic properties in matter will be reviewed as well. The talks related to the nucleon structure program will give an overview on the present situation and will deal with specific aspects for antiproton induced reactions, particularly with the question how to produce polarized antiprotons.

In order to put the program in a general context, talks on QCD studies at high energies, on Hypernuclar physics with antiprotons and on low energy antiproton physics (FLAIR project) are foreseen, respectively.