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arXiv · hep-ph/9607367

Electro-excitation amplitudes of the Delta-isobar in the Skyrme model

H. Walliser·G. Holzwarth
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Abstract

Electro magnetic transition form factors for the excitation of the Delta33-resonance are evaluated in the Skyrme model. They crucially rely on rotationally induced deformations of the hedgehog soliton which are suppressed by two N_C-orders as compared to the leading parts of the isovector current. Partial photon coupling through vector mesons is included in a schematic way. Recoil corrections are approximated by a boost to the equal-velocity frame. The results for the photodecay amplitudes agree with experimental numbers and the shapes of M1, E2, C2 - transition form factors show essential features as observed in electro-excitation experiments.

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H. Walliser, G. Holzwarth. 1996-10-29. Electro-excitation amplitudes of the Delta-isobar in the Skyrme model. https://doi.org/10.1007/s002180050248

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