Comparison of nucleon-nucleon potential models in proton-proton bremsstrahlung

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Abstract
The sensitivity of the ppγ process to the different off-shell behaviors of existing nucleon-nucleon interactions based on modern potentials is investigated within a relativistic approach. We find that the analyzing power is sufficiently sensitive to distinguish between the off-shell behaviors of those interactions considered. The ppγ spin-correlation coefficients are also found to be sensitive to off-shell differences of nucleon-nucleon interactions so that, if data for these observables were available, they could be used to disentangle different off-shell nonequivalent interactions. The cross sections are unable to discriminate between those interactions considered based on their off-shell differences.