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- W3147087317 abstract "Using relativistic spin-flavor wave functions of a Lorentz-covariant light cone quark model, we calculate the electromagnetic form factors of two S11 resonances, N(1535) and N(1650), and the helicity amplitudes A1/2 and S1/2 for electroexcitation of the S11 resonances from the nucleon. The electromagnetic form factors of these S11 resonances are found to be similar to those of the nucleon in shape, while the charge form factor of neutral N(1650) is nearly zero. The relative peak height of the S11 charge form factors is controlled by the mixing angle common to both resonance wave functions. As in most quark models, there is a systematic overestimate of A1/2p in both N(1535) and N(1650) cases at the photon point. A sizeable S1/2 for all cases is produced as suggested by experiments." @default.
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- W3147087317 date "2006-01-01" @default.
- W3147087317 modified "2023-09-23" @default.
- W3147087317 title "Electromagnetic Properties of S11 States in a Light Cone Quark Model" @default.
- W3147087317 hasPublicationYear "2006" @default.
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