Diquark correlations from nucleon charge radii

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

doi:10.1016/j.physletb.2006.02.050

Diquark correlations from nucleon charge radii

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

Physics

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	100-106
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	635
Issue number	2-3
DOIs	https://doi.org/10.1016/j.physletb.2006.02.050
State	Published - Apr 6 2006

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2006.02.050

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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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T1 - Diquark correlations from nucleon charge radii

AU - Carlson, Carl E.

AU - Carone, Christopher D.

AU - Kwee, Herry J.

AU - Lebed, Richard

PY - 2006/4/6

Y1 - 2006/4/6

N2 - 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.

AB - 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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U2 - 10.1016/j.physletb.2006.02.050

DO - 10.1016/j.physletb.2006.02.050

M3 - Article

AN - SCOPUS:33644897346

SN - 0370-2693

VL - 635

SP - 100

EP - 106

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 2-3

ER -

Diquark correlations from nucleon charge radii

Abstract

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