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It is suggested that the recent fit by Abarbanel et al. of dσdt for p-p elastic scattering at large s and t to a curve of the electromagnetic form factor raised to fourth power, [G_Mₚ(t)]⁴, corresponds to the SU(3)-breaking interaction. This is the only non-Regge pole in the strong interaction, which is otherwise entirely described by Regge-trajectory or bootstrap dynamics.
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Yuval Ne’eman (1968) studied this question.
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