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Photo- and electroproduction of nonstrange baryon resonances in the relativized quark model

1992; American Physical Society; Volume: 46; Issue: 7 Linguagem: Inglês

10.1103/physrevd.46.2864

1538-4500

Simon Capstick,

High-Energy Particle Collisions Research

Photoproduction amplitudes for the nonstrange baryons are calculated in a quark model with an electromagnetic transition operator containing relativistic corrections, and relativized-quark-model wave functions. A one-parameter fit to the photocouplings shows significant improvements over models using the nonrelativistic transition operator or nonrelativistic wave functions. Helicity asymmetries and other ratios in the electroproduction of some low-lying resonances are also predicted.