Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-10-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 5 Postscript figures
Scientific paper
10.1134/1.855646
Influence of the effects of the pion-nucleon and nucleon-nucleon re-scattering on the polarization observables of the reaction gamma + d = p + p + pi- in Delta - isobar region is investigated. Pion-nucleon and nucleon-nucleon re-scattering are studied in the diagrammatic approach. Relativistic-invariant forms of the pion photoproduction and pion-nucleon scattering operators are used. The unitarization procedure in K-matrix approach is applied for the resonance partial amplitudes. It is shown a considerable influence of the re-scattering effects on the polarization observables of this reaction in the Delta - resonance region for the large momenta of the final protons.
Loginov Yu. A.
Sidorov Andrei
Stibunov V. N.
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