SCHAFER, T and WEISE, W (1991) THRESHOLD PION-PHOTOPRODUCTION AND CHIRAL MODELS OF THE NUCLEON. NUCLEAR PHYSICS A, 531 (3-4). pp. 520-538. ISSN 0375-9474,
Full text not available from this repository.Abstract
We present calculations of the chiral and isospin symmetry-breaking corrections to the threshold pion photoproduction amplitude E0+. The calculations are based on two chiral models of the nucleon: the chiral bag model and the non-topological soliton model. We find that DELTA-E0+ from explicit chiral-symmetry breaking is substantial, but not sufficient to explain the discrepancy between the measured gamma-p --> pi-0p threshold amplitude and its predicted value based on the chiral low-energy theorem.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LOW-ENERGY PHOTOPRODUCTION; SYMMETRY-BREAKING; PHYSICAL PIONS; NEUTRAL PIONS; SPIN CONTENT; BAG MODEL; PROTON; ELECTROPRODUCTION; THEOREMS; HEDGEHOG; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54867 |
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