By André Morel (auth.), F. Bradamante, J.-M. Richard, R. Klapisch (eds.)
The 3rd process the foreign university on Physics with Low power Antiprotons used to be held in Erice, Sicily on the Ettore Majorana Centre for clinical tradition, from 10 to 18 June, 1988. the varsity is devoted to physics obtainable to experiments utilizing low power antiprotons, specifically in view of operation of the LEAR facility at CERN with the upgraded antiproton resource AAC (Antiproton Accumulator AA and Antiproton Collector ACOL). the 1st direction in 1986 coated themes concerning basic symmetries; the second one direction in 1987 excited by spectroscopy of sunshine and heavy quarks. This e-book con tains the complaints of the 3rd direction, dedicated to the experimental and theoretical points of the interplay of antinucleons with nucleons and nuclei. The lawsuits include either the educational lectures and contributions offered by means of individuals throughout the college. The papers are prepared in numerous sections. the 1st part offers with the theoretical elements of NN scattering and annihilation, and the underlying QCD. The experimental innovations and effects referring to NN scattering are contained in part II. part III comprises theoretical experiences and contributions on anti proton-nucleus scattering and sure states. part IV is dedicated to the experimental effects at the antiproton nucleus platforms and their phenomenological research. eventually, a few attainable advancements of the antiproton machines are presented.
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Extra resources for Antiproton-Nucleon and Antiproton-Nucleus Interactions
Thus its interactions may be computed perturbatively. The above observations form the basis of the application of renormalization group equations and the operator product expansion to these reactions, and allows one to calculate the leading power behavior and the QCD logarithmic evolution of exclusive amplitudes for the pion form factor and I I annihilation into meson pairs to all orders in perturbation theory. The predictions 32 for the leading twist term in exclusive QCD hadronic amplitudes are thus unambiguous.
The above description is the ideal result for large s. QCD predicts that additivity is approached monotonically with increasing energy, corresponding to two effects: a) the effective transverse size of the p wavefunction is b1. '" 1 / v'S, and b) the formation time for the p is sufficiently long, such that the Fock state stays small during transit of the nucleus. The above example is an important example of the PQCD effect called "color transparency;" similar behavior is expected for all hard annihilation processing pp -+ 1M, pp -+ J /'I/J, etc.
Discrete momentum space basis. , Ai). So far the method has been successfully applied to gauge theories and Yukawa theory (scalar gluons) in one-space and one-time dimension. New results for the spectrum and wavefunctions for QCD[l+l] are presented in sec. 15. 3. , the time-like proton form factors F1(S) and F2(S). According to the QCD factorization analysis for exclusive processes, the main dynamics is contained [to leading order in l/s,s = (p + p)2] in the ijijij qqq _ ,. _l£ amplitude. To leading order in os(Q2) the latter can be computed from minimally connected PQCD tree graphs containing two off-shell gluons and two off-shell quark lines.
Antiproton-Nucleon and Antiproton-Nucleus Interactions by André Morel (auth.), F. Bradamante, J.-M. Richard, R. Klapisch (eds.)