- Turkish Journal of Physics
- Vol: 30 Issue: 6
- Helicity Dependence of the \vecg\vec N \to p N Reaction Channels in the D-Resonance Region
Helicity Dependence of the \vecg\vec N \to p N Reaction Channels in the D-Resonance Region
Authors : E. M. Darwish And M. A. El-zohry
Pages : 479-492
Doi:10.3906/tar-1204-46
View : 10 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
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.Keywords : photoproduction reactions, meson production, polarization phenomena in reactions.