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F acility for A ntiproton and I on R esearch

Research program with qualitatively new features:. towards new dimensions. higher temperatures T densities  Strangeness S. Antimatter. N - Z. higher isospin. Ultra-high electromagnetic fields. F acility for A ntiproton and I on R esearch. GSI today. Future facility.

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F acility for A ntiproton and I on R esearch

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  1. Research program with qualitatively new features: towards new dimensions higher temperatures T densities  Strangeness S Antimatter N - Z higher isospin Ultra-high electromagnetic fields Facility for Antiproton and Ion Research

  2. GSI today Future facility • nuclear structure • compressed baryonic matter • atomic- and plasma physics • physics with antiproton beams: • hadron physics

  3. glueballs (ggg) hybrids (ccg) J/ spectroscopy confinement hidden and open charm in nuclei strange and charmed baryons in nuclear field inverted deeply virtual Compton scattering CP-violation (D/ - sector) PAX: collider Physics program at the High Energy Storage Ring (HESR)

  4. M = invariant mass of lepton pair Transversity in the Drell Yan Process Polarized antiprotons  polarized protons (both transversely polarized)

  5. Signatories of the FAIR Memorandum of Understanding A CN DE ES FI FR GB GR IN IT PL RO RU SE Start: 7. 11. 1007 Architekten Blick

  6. q(x,Q2) unpolarized quark distribution q(x,Q2) helicity distribution h1q (x,Q2) transversity distribution Transversity Last leading-twist missing piece in the QCD description of the partonic structure of the nucleon In deep-inelastic lepton scattering transversity distribution folded with fragmentation functions; directly accessible via the double transverse spin asymmetry ATT in Drell-Yan production of lepton pairs

  7. g* g pQCD wide angle Compton scattering: factorisation into hard amplitude (calculable in perturbative QCD) and soft amplitude (information on parton distributions) non-perturbative QCD • clear experimental signature; both baryons in ground state A. Freund et al, PRL 90 (2003) 092001 p • cross section:   2.5 pb g Identical diagram (reversed) (at | u |, | t |  s  10 GeV2) O (103) events per month exclusive annihilation : p g Access to Generalized Parton Distributions

  8. Antiproton Polarizer Ring (p  300 MeV/c) Cooler Synchrotron Ring (p < 3.5 GeV/c) Phase I:(fixed target) polarized antiprotons (p < 3.5 GeV/c) Phase II: (collider mode) polarized antiprotons (p  15GeV/c) (p  3.5 GeV/c) ; x > 0.05; Q2 = 4 ....100 GeV2 PAX @ FAIR

  9. Electron-nucleus collider D. von Harrach, V. Metag, A. Schäfer, Nucl. Phys. A 622 (1997) 46

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