Nuclear Physics A
595 (2), 219-258
1995
A1
Published while none of the authors were employed at the CMM
Abstract
A fully relativistic, gauge invariant and unitary pion photoproduction model is constructed including π, ϱ, ω, N and Δ degrees of freedom. The model is compared in detail to pion photoproduction observables in view of several sets of high-quality data that were obtained through the Δ resonance region in recent years. Starting from the relativistic model, a non-relativistic model mean ffor calculations in the nuclear medium is derived. The non-relativistic model is constructed to satisfy unitarity and is applied to both charged and neutral pion photoproduction with the same parameter set.
DOI
http://dx.doi.org/10.1016/0375-9474(95)00386-1