Abstract
Radiative pion photoproduction in the -resonance region is studied with the aim of accessing the magnetic dipole moment. We present a unitary model of the () reactions, where the rescattering is included in an onshell approximation. In this model, the low-energy theorem which couples the process in the limit of a soft final photon to the process is exactly satisfied. We study the sensitivity of the process at higher values of the final photon energy to the magnetic dipole moment. We compare our results with existing data and give predictions for forthcoming measurements of angular and energy distributions. It is found that the photon asymmetry and a helicity cross section are particularly sensitive to the magnetic dipole moment.
10 More- Received 8 September 2004
DOI:https://doi.org/10.1103/PhysRevC.71.015204
©2005 American Physical Society