Analysis of pion photoproduction and the quark model
Abstract
(N*Nγ) couplings for resonances in the first, second, and third resonance region are determined in a continuous-energy partial wave analysis of single-pion photoproduction off protons and neutrons using fixed-t dispersion relations. Several couplings are determined for the first time. Most results, especially for the principal resonances, agree well with the predictions of the quark model, but the P11 (1470), on its present unmixed multiplet assignment, disagrees.
- Publication:
-
Physics Letters B
- Pub Date:
- January 1973
- DOI:
- 10.1016/0370-2693(73)90540-6
- Bibcode:
- 1973PhLB...43...44M