A chiral bag model approach to delta electroproduction

Details A chiral bag model approach to delta electroproduction A chiral bag model approach to delta electroproduction

1996-12-09

arxiv.org/abs/nucl-th/9612017v1

Phys.Rev.C55:3108-3114,1997

Physics

Nuclear Physics

Nuclear Theory

16 pages, 6 ps figures, revtex

Scientific paper

10.1103/PhysRevC.55.3108

Helicity amplitudes for the $\gamma^* N \to \Delta$ transition are calculated using the cloudy bag model. A correction for center-of-mass motion is carried out using a modified Peierls-Thouless projection method. This reduces the magnitude of the transition amplitudes at small momentum transfer and enhances them at modest momentum transfers. Our calculation shows that the pion cloud contributes substantially to the transition helicity amplitudes, with the final result giving reasonable agreement with the corresponding experimental values.

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