Diquark correlations from nucleon charge radii

Carl E. Carlson, Christopher D. Carone, Herry J. Kwee, Richard Lebed

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We argue that precise measurements of charge and magnetic radii can meaningfully constrain diquark models of the nucleon. We construct properly symmetrized, nonrelativistic three-quark wave functions that interpolate between the limits of a pointlike diquark pair and no diquark correlation. We find that good fits to the data can be obtained for a wide range of diquark sizes, provided that the diquark wave functions are close to those that reduce to a purely scalar state in the pointlike limit. A modest improvement in the experimental uncertainties will render a fit to the charge radii a more telling diagnostic for the presence of spatially correlated quark pairs within the nucleon.

Original languageEnglish (US)
Pages (from-to)100-106
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume635
Issue number2-3
DOIs
StatePublished - Apr 6 2006

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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