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

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Electro magnetic transition form factors for the excitation of the Δ33-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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Authors and Affiliations

  1. Fachbereich Physik, Universität-GH-Siegen, D-57068, Siegen, Germany

    H. Walliser & G. Holzwarth

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  1. H. Walliser
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  2. G. Holzwarth
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Correspondence to H. Walliser.

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Walliser, H., Holzwarth, G. Electro-excitation amplitudes of the Δ-isobar in the Skyrme model. Z Phys A - Particles and Fields 357, 317–324 (1997). https://doi.org/10.1007/s002180050248

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  • DOI: https://doi.org/10.1007/s002180050248

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