New analytic unitarization schemes
نویسندگان
چکیده
منابع مشابه
Analytic properties of unitarization schemes
Saturation is now a very popular term, but it has a very wide meaning. It includes shadowing and antishadowing processes, the saturation of the FroissartMartin bound [1], gluon merging at small x and geometrical scaling, unitarization effects, etc. In the S-matrix language, saturation means that we reach the maximum possible scattering. This happens for a specific value of the impact parameter,...
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The analytic properties of the eikonal and U -matrix unitarization schemes are examined. It is shown that the basic properties of these schemes are identical. Both can fill the full circle of unitarity, and both can lead to standard and non-standard asymptotic relations for σel/σtot. The relation between the phases of the unitarised amplitudes in each scheme is examined, and it is shown that de...
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Different forms of non-linear equations which mimic parton saturation in the non-perturbative regime are examined. These equations lead to corresponding unitarization schemes in the impact parameter representation of the hadron scattering amplitude. It is shown how specific properties of the non-linear equations reflect different features of the diffraction processes.
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.034033