Diquark electromagnetic form factors in a Nambu-Jona-Lasinio model

Preprint

6 May 1993

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9305215

Abstract

Electromagnetic properties of diquarks are investigated in the framework of a color-octet Nambu-Jona-Lasinio model, which describes baryons as bound states of diquarks and quarks. We calculate the electromagnetic form factors of scalar and axial vector diquark bound states using the gauge--invariant proper--time regularization. The nucleon charge radii and magnetic moments are estimated in a simple additive diquark--quark model. This picture reproduces the qualitative features such as the negative charge radius of the neutron. Within this model axial vector diquarks are seen to be important.

Keywords

MODEL ELECTROMAGNETIC
ELECTROMAGNETIC FORM
LASINIO MODEL
JONA LASINIO
FORM FACTORS
NAMBU JONA
DIQUARKS

All Related Versions

Version 1, 1993-05-06, ArXiv
Published version: Physics Letters B, 312 (1-2), 6.

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