Field theory of nucleon to higher-spin baryon transitions
Abstract
We discuss the nucleon to higher-spin N- and -resonance transitions by pions and photons. The higher-spin baryons are described by Rarita-Schwinger fields and, as we argue, this imposes a stringent consistency requirement on the form of the couplings. Popular π N and γ N couplings are inconsistent from this point of view. We construct examples of consistent interactions with the same nonrelativistic limit as the conventional ones.
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