Journals / Turkish Journal of Physics / 2006 / Cilt: 30 - Sayı: 6
Helicity Dependence of the \vecg\vec N \to p N Reaction Channels in the D-Resonance Region
- Journal
- Turkish Journal of Physics
- Pages
- 479–492
- DOI
- —
Abstract
Based on a prior effective Lagrangian model on single pion photoproduction from the nucleon, successfully tested in total and differential cross sections, the helicity dependence from the interaction of circularly polarized photons and a longitudinally polarized nucleon target is studied in the energy range from p-threshold through the D(1232)-resonance region. The doubly polarized total and differential cross section differences for parallel s3/2 and antiparallel s1/2 helicity states are predicted and compared with recent experimental data. We show that the results are sensitive to interferences among different contributions to the process and, thus, represent a complementary test of the theoretical model. A quite satisfactory agreement with recent experimental data from the GDH-collaboration is obtained.
Özet
Based on a prior effective Lagrangian model on single pion photoproduction from the nucleon, successfully tested in total and differential cross sections, the helicity dependence from the interaction of circularly polarized photons and a longitudinally polarized nucleon target is studied in the energy range from p-threshold through the D(1232)-resonance region. The doubly polarized total and differential cross section differences for parallel s3/2 and antiparallel s1/2 helicity states are predicted and compared with recent experimental data. We show that the results are sensitive to interferences among different contributions to the process and, thus, represent a complementary test of the theoretical model. A quite satisfactory agreement with recent experimental data from the GDH-collaboration is obtained.