Nucleon Form Factors in a Covariant Diquark-Quark Model

Preprint

8 May 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9705267

Abstract

In a model where constituent quarks and diquarks interact through quark exchange the Bethe-Salpeter equation in ladder approximation for the nucleon is solved. Quark and diquark confinement is effectively parametrized by choosing appropriately modified propagators. The coupling to external currents is implemented via nontrivial vertex functions for quarks and diquarks to ensure gauge invariance at the constituent level. Nucleon matrix elements are evaluated in a generalised impulse approximation, and electromagnetic, pionic and axial form factors are calculated.

Keywords

QUARKS AND DIQUARKS
COVARIANT DIQUARK
APPROXIMATION
NUCLEON FORM
FORM FACTORS
MODEL

All Related Versions

Version 1, 1997-05-08, ArXiv
Published version: Nuclear Physics A, 627 (4), 679.

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