Two isobar models with high-spin baryon resonances and modified electromagnetic form factors fit CLAS K+Lambda electroproduction data with chi-square per point of 2.16.
The GDH Sum Rule and Related Integrals
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abstract
The spin structure of the nucleon resonance region is analyzed on the basis of our phenomenological model MAID. Predictions are given for the Gerasimov-Drell-Hearn sum rule as well as generalized integrals over spin structure functions. The dependence of these integrals on momentum transfer is studied and rigorous relationships between various definitions of generalized Gerasimov-Drell-Hearn integrals and spin polarizabilities are derived. These results are compared to the predictions of chiral perturbation theory and phenomenological models.
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New Isobar Models for $K^+\Lambda$ Electroproduction
Two isobar models with high-spin baryon resonances and modified electromagnetic form factors fit CLAS K+Lambda electroproduction data with chi-square per point of 2.16.