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

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

1996-07-18

arxiv.org/abs/hep-ph/9607367v2

Z.Phys.A357:317-324,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, LaTeX, 4 PS figures. Revised version, more references and 1 figure added

Scientific paper

10.1007/s002180050248

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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