Nucleon tensor charges'' and the Skyrme model

Journal Article · Mon Mar 01 04:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.2136· OSTI ID:6820313

Olness, J M ^[1]

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1. Center for Theoretical Physics, Laboratory for Nuclear Science, Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

The lowest moment of the twist-two, chiral-odd parton distribution [ital h][sub 1]([ital x]) of the nucleon can be related to the so-called tensor charges'' of the nucleon. We consider the tensor charges in the Skyrme model, and find that in the large-[ital N][sub [ital c]], SU(3)-symmetric limit, the model predicts that the octet isosinglet tensor charge [ital g][sub [ital T]][sup 8] is of order 1/[ital N][sub [ital c]] with respect to the octet isovector tensor charge [ital g][sub [ital T]][sup 3]. The predicted [ital F]/[ital D] ratio is then 1/3, in the large-[ital N][sub [ital c]] limit. These predictions coincide with the Skyrme model predictions for the octet [ital axial] charges [ital g][sub [ital A]][sup 8] and [ital g][sub [ital A]][sup 3]. (The prediction [ital F]/[ital D]=1/3 for the axial charges differs from the commonly quoted prediction of 5/9, which is based on an inconsistent treatment of the large-[ital N][sub [ital c]] limit. A consistent treatment yields the result quoted above, and shows that the strange quark contribution to the nucleon spin is of order unity, and not of order [ital N][sub [ital c]], as previously stated.) The model also predicts that the singlet tensor charge [ital g][sub [ital T]][sup 0] is of order 1/[ital N][sub [ital c]] with respect to [ital g][sub [ital T]][sup 3].

• DOE Contract Number: AC02-76ER03069
• OSTI ID: 6820313
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:5; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
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662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYONS
CHARGE DISTRIBUTION
COMPOSITE MODELS
DEEP INELASTIC SCATTERING
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LIE GROUPS
MATHEMATICAL MODELS
MATRIX ELEMENTS
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTON MODEL
PERTURBATION THEORY
POSTULATED PARTICLES
POTENTIALS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RENORMALIZATION
SCATTERING
SKYRME POTENTIAL
SPIN
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS