N Delta - Transition Form Factors at Low Momentum Transfer

Applications); C. N. Ktorides (University of Athens); G. C. Gellas (University of Athens); G. I. Poulis (University of Athens; IKP); Institute of Accelerating Systems; T. R. Hemmert (Forschungszentrum Julich

arxiv: hep-ph/9811231 · v1 · submitted 1998-11-03 · ✦ hep-ph

N Delta - Transition Form Factors at Low Momentum Transfer

G. C. Gellas (University of Athens) , T. R. Hemmert (Forschungszentrum Julich , IKP) , C. N. Ktorides (University of Athens) , G. I. Poulis (University of Athens , Institute of Accelerating Systems , Applications) This is my paper

classification ✦ hep-ph

keywords deltafactorsformaffectcalculatedchiralcomplexconstants

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The three complex form factors entering the $\Delta\to N\gamma^\ast$ vertex are calculated to ${\cal O}(\epsilon^3)$ in the framework of a chiral effective theory with explicit $\Delta$(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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N Delta - Transition Form Factors at Low Momentum Transfer

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