Electroproduction of the Roper Resonance as a Hybrid State
Description:
The Q^2 dependence of the helicity amplitudes for the Roper resonance as a hybrid state is presented.Our study shows that the magnitude of the transverse helicity amplitude decreases rapidly as Q^2 increases, while the longitudinal helicity amplitude vanishes for the hybrid state.This feature is quite different from the prediction of the q^3 potential quark model, in which the Roper resonance is assumed to be an orbitally excited state.The comparison with data shows that the hybrid interpretati…
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Date:
August 1, 1991
Creator:
Burkert, Volker; Li, Zhenping & Li, Zhujun
Item Type:
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UNT Libraries Government Documents Department