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Delta--Excitation and Exchange Corrections for NN--Bremsstrahlung

M. Jetter·H. W. Fearing
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Abstract

The role of the relativistic amplitudes for a number of ${\cal O}(k)$ processes usually neglected in potential model calculations of NN--bremsstrahlung is investigated. In particular, we consider the $Δ$--excitation pole contributions related to the one--pion and one--rho exchange and in addition include the exchange contributions induced by the radiative $ω,\,ρ\to πγ$ decays. The contributions are calculated from relativistic Born amplitudes fitted to $Δ$--production and absorption data in the energy range up to 1 GeV and then used to supplement potential model and soft photon calculations for nucleon--nucleon bremsstrahlung. The effects on $NNγ$--observables, although moderate in general, are found to be important in some kinematic domains.

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M. Jetter, H. W. Fearing. 1994-10-21. Delta--Excitation and Exchange Corrections for NN--Bremsstrahlung. https://doi.org/10.1103/physrevc.51.1666

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