A covariant diquark-quark model of the nucleon in the Salpeter approach

Details A covariant diquark-quark model of the nucleon in the Salpeter approach A covariant diquark-quark model of the nucleon in the Salpeter approach

1996-03-05

arxiv.org/abs/hep-ph/9603226v1

Phys.Rev.C54:3232-3239,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, REVTeX, 10 figures (ps and eps) included

Scientific paper

10.1103/PhysRevC.54.3232

We develop a rather simple, 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 all electromagnetic form factors for momentum transfers up to -3 (GeV/c)^2.

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