By André Morel (auth.), F. Bradamante, J.-M. Richard, R. Klapisch (eds.)
The 3rd process the foreign institution on Physics with Low power Antiprotons was once held in Erice, Sicily on the Ettore Majorana Centre for clinical tradition, from 10 to 18 June, 1988. the college is devoted to physics available to experiments utilizing low strength antiprotons, specially 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 regarding basic symmetries; the second one direction in 1987 enthusiastic about spectroscopy of sunshine and heavy quarks. This ebook con tains the lawsuits of the 3rd path, dedicated to the experimental and theoretical features of the interplay of antinucleons with nucleons and nuclei. The court cases include either the educational lectures and contributions awarded by way of individuals throughout the tuition. The papers are geared up in different sections. the 1st part offers with the theoretical elements of NN scattering and annihilation, and the underlying QCD. The experimental innovations and effects bearing on NN scattering are contained in part II. part III comprises theoretical stories and contributions on anti proton-nucleus scattering and certain states. part IV is dedicated to the experimental effects at the antiproton nucleus structures and their phenomenological research. ultimately, a few attainable advancements of the antiproton machines are presented.
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Additional info for Antiproton-Nucleon and Antiproton-Nucleus Interactions
A test of color transparency in quasielastic pp -+ pp scattering has recently been performed at BNL. This is discussed in more detail in secs. 4 and 9. In the next section I will discuss the general problem of hadronization in the nuclear environment for both exclusive and inclusive reactions. More detailed discussions of exclusive reactions in QCD are then given in secs. 5-13. 33 4. QCD HADRONIZATION IN NUCLEI The least-understood process in QCD is hadronization - the mechanism which converts quark and gluon quanta to color-singlet integrally-charged hadrons.
QCD HADRONIZATION IN NUCLEI The least-understood process in QCD is hadronization - the mechanism which converts quark and gluon quanta to color-singlet integrally-charged hadrons. One way to study hadronization is to perturb the environment by introducing a nuclear medium surrounding the hard-scattering short distance reaction. This is obviously impractical in the theoretically simplest processes - e+e- or II annihilation. However, for large momentum transfer reactions occurring in a nuclear target, such as deep inelastic lepton scattering or massive lepton pair production, the nuclear medium provides a nontrivial perturbation to jet evolution through the influence of initial- and/or finalstate interactions.
The CZ form is assumed. = = = fer ~5,66 As emphasized in sec. 4, an important check of the QCD predictions can be obtained by combining data from pp -+ " , " -+ pp with large angle Compton scattering ,p -+ ,p. This comparison checks in detail the angular dependence and crossing behavior expected from the theory. Furthermore, in pp collisions one can even study time-like photon production into e+ e- and examine the virtual photon mass dependence of the Compton amplitude. Predictions for the q2 dependence of the pp -+ amplitude can be obtained by crossing the results of Gunion and Mi11ers~3 ,,* 8.