Proton-proton bremsstrahlung below and above pion threshold: Influence of the Δ isobar
- 1 May 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 51 (5) , 2334-2346
- https://doi.org/10.1103/physrevc.51.2334
Abstract
The proton-proton bremsstrahlung is investigated within a coupled-channel model with the Δ degree of freedom. The model is consistent with the NN scattering up to 1 GeV and the γNΔ vertex determined in the study of pion photoproduction reaction. It is found that the Δ excitation can significantly improve the agreements with the pp→ppγ at =280 MeV. Predictions at =550 and 800 MeV are presented for future experimental tests.
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