A systematic study of longitudinal and transverse helicity amplidutes in the hypercentral Constituent Quark Model
Abstract
We report in a systematic way the predictions of the non-relativistic hypercentral Constituent Quark model for the electromagnetic excitations of baryon resonances. The longitudinal and transverse helicity amplitudes are calculated with no free parameters for fourteen resonances, both for proton and neutron. The calculations lead to an overall fair description of data, specially in the medium Q2 range, where quark degrees of freedom are expected to dominate.
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