Covariant diquark-quark model of the nucleon in the Salpeter approach
- Institut fuer Theoretische Kernphysik, Universitaet Bonn, Nussallee 14-16, D-53115 Bonn (Germany)
We develop a formally covariant quark-diquark model of the nucleon. The nucleon is treated as a bound state of a constituent quark and a diquark interacting via a quark exchange. We include both scalar and axial-vector diquarks. The underlying Bethe-Salpeter equation is transformed into a pair of coupled Salpeter equations. The electromagnetic form factors of the nucleon are calculated in the Mandelstam formalism. We obtain a very good description of the proton electric and magnetic form factors and of the neutron electric form factor for momentum transfers up to {minus}3(GeV/{ital c}){sup 2}. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 397718
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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