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N Delta - Transition Form Factors at Low Momentum Transfer

G. C. Gellas·T. R. Hemmert·C. N. Ktorides·G. I. Poulis
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Abstract

The three complex form factors entering the $Δ\to Nγ^\ast$ vertex are calculated to ${\cal O}(ε^3)$ in the framework of a chiral effective theory with explicit $Δ$(1232) degrees of freedom. Furthermore, the role of presently unknown low energy constants that affect the values of EMR and CMR is elucidated.

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G. C. Gellas, T. R. Hemmert, C. N. Ktorides, G. I. Poulis. 1998-11-03. N Delta - Transition Form Factors at Low Momentum Transfer. https://arxiv.org/abs/hep-ph/9811231

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