New Perspectives for Physics with Antiprotons: the HESR-Project at GSI Volker Metag II. Physikalisches Institut Justus-Liebig-Universität Gießen, Germany XXVII Mazurian Lakes School of Physics, September 2-9, 2001
Quantum chromodynamics at short distances S << 1 quantitative description of the experimental cross section over 10 orders of magnitude by perturbative QCD! jet transverse energy perturbative treatment: example: jet production in pp-collisions at = 1.8 TeV(Fermilab) pp
Quantum chromodynamics at large distances S (Q 2 ) 1 for Q 2 1 GeV 2 non-perturbative phenomena: confinement, chiral symmetry breaking challenge: explore QCD in the non-perturbative regime distance [m]
charmonium spectroscopy: testing confinement unique window to study interplay of perturbative and non-perturbative effects open problems in J/ spectroscopy: search for c '-state confirm 'P 1 -state measure transition rates identify states above DD threshold energy levels, widths: details of QQ interaction exclusive decays: sensitive to non-perturbative effects
spontaneous symmetry breaking paramagneticferromagnetic chirally symmetric world our world hadron mass temperature, density
Mesons and Exotics
detector scenario for HESR detector features: tracking of charged particles measurement and identification of , e , , , K , p, p high rate capability sophisticated and fast trigger scheme