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Field theory of nucleon to higher-spin baryon transitions

V. Pascalutsa·R. G. E. Timmermans
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Abstract

We discuss the nucleon to higher-spin $N$- and $Δ$-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 $πNΔ$ and $γNΔ$ 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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V. Pascalutsa, R. G. E. Timmermans. 1999-09-13. Field theory of nucleon to higher-spin baryon transitions. https://doi.org/10.1103/physrevc.60.042201

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