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arXiv · hep-ph/0512207

Diquark Correlations from Nucleon Charge Radii

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

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Carl E. Carlson, Christopher D. Carone, Herry J. Kwee, Richard F. Lebed. 2006-02-16. Diquark Correlations from Nucleon Charge Radii. https://doi.org/10.1016/j.physletb.2006.02.050

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