منابع مشابه
Chiral Perturbation Theory and Unitarization
We review our recent work on unitarization and chiral perturbation theory both in the ππ and the πN sectors. We pay particular attention to the Bethe-Salpeter and Inverse Amplitude unitarization methods and their recent applications to ππ and πN scattering.
متن کاملAnalytic properties of different unitarization schemes
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...
متن کاملAnalytic 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,...
متن کاملUnitarization in Nonlinear Spinor Field Quantum Theory
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
متن کاملDiffusion into infra - red and unitarization of the BFKL pomeron
The BFKL pomeron in perturbative QCD is plagued by the lack of unitarity and diffusion into the infra-red region of gluon virtualities. These two problems are intimately related. We perform numerical studies of the evolution equation proposed by Balitsky and Kovchegov which unitarizes the BFKL pomeron. We show how diffusion into the infra-red region is suppressed due to the emergence of a satur...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2019
ISSN: 1029-8479
DOI: 10.1007/jhep12(2019)165