Download PDF by André Morel (auth.), F. Bradamante, J.-M. Richard, R.: Antiproton-Nucleon and Antiproton-Nucleus Interactions

By André Morel (auth.), F. Bradamante, J.-M. Richard, R. Klapisch (eds.)

ISBN-10: 146127883X

ISBN-13: 9781461278832

ISBN-10: 1461305950

ISBN-13: 9781461305958

The 3rd process the foreign institution on Physics with Low strength 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 strength antiprotons, particularly 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 subject matters with regards to primary symmetries; the second one direction in 1987 excited by spectroscopy of sunshine and heavy quarks. This booklet con­ tains the lawsuits of the 3rd path, dedicated to the experimental and theoretical facets of the interplay of antinucleons with nucleons and nuclei. The complaints comprise either the educational lectures and contributions provided via contributors in the course of the tuition. The papers are geared up in numerous sections. the 1st part offers with the theoretical elements of NN scattering and annihilation, and the underlying QCD. The experimental thoughts and effects bearing on NN scattering are contained in part II. part III comprises theoretical reports and contributions on anti­ proton-nucleus scattering and certain states. part IV is dedicated to the experimental effects at the antiproton­ nucleus platforms and their phenomenological research. ultimately, a few attainable advancements of the antiproton machines are presented.

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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.

14 is approximately characterized'! as TH 1 1 1 t2 s u rv - 43 Fig. 14. A perturbative contribution to the hard-scattering amplitude in nucleon-nucleon collisions. comparisons between channels related by crossing of the Mandelstam variables places a severe constraint on the angular dependence and analytic form of the underlying QCD exclusive amplitude. For example, it is possible to measure and compare PP ~ I I : IP ~ IP : I I ~ PP PP ~ ,7r 0 : IP ~ 7r 0P : 7r0P ~ IP . SLAC measurements 52 of the IP ~ 7r+n cross section at OCM = 7r/2 are consistent with the normalization and scaling (see fig.

Clearly, PP ~ PP data in the large-angle, large-energy regime will also be helpful in clarifying these fundamental issues. ) 10-34 N E ~ 10-30 bl- -0-0 10-31 10-31 10-32 10- 32 10-33 10-33 1 1 1 1 II 3040 6080 10-34 Fig. 16. Test of fixed 8eM scaling for elastic pp scattering. 5 compared to the dimensional counting prediction N=10. Small deviations are not readily apparent on this log-log plot. The compilation is from Landshoff and Polkinghorne. t-, which to leading order in a provides a direct measurement of the Dirac and Pauli time-like proton form factor.

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Antiproton-Nucleon and Antiproton-Nucleus Interactions by André Morel (auth.), F. Bradamante, J.-M. Richard, R. Klapisch (eds.)

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