Nucleon form factors and static properties of baryons in a quark model

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.1568· OSTI ID:6916150

Barik, N ^[1]; Jena, S N ^[2]; Rath, D P ^[3]

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1. Department of Physics, Utkal University, Bhubaneswar 751004, Orissa, India (IN)
2. Department of Physics, Berhampur University, Berhampur 760007, Orissa, India (IN)
3. Department of Physics, Aska Science College, Aska 761110, Orissa, India (IN)

The nucleon electromagnetic form factors {ital G}{sub {ital E}}{sup {ital p}}(q{sup 2}), {ital G}{sub {ital M}}{sup {ital p}}(q{sup 2}), {ital G}{sub {ital M}}{sup {ital n}}(q{sup 2}), and the axial-vector form factor {ital G}{sub {ital A}}(q{sup 2}) are calculated in a simple independent-quark model based on the Dirac equation with a logarithmic confining potential of the form {ital V}{prime}({ital r})=(1+{gamma}{sup 0})a ln({ital r}/{ital b}). The respective rms radii associated with {ital G}{sub {ital E}}{sup {ital p}}(q{sup 2}) and {ital G}{sub {ital A}}(q{sup 2}) come out as ({l angle}{ital r}{sup 2}{r angle}{sub E}{sup P}){sup 1/2}=0.938 fm and {l angle}{ital r}{sub {ital A}}{sup 2}{r angle}{sup 1/2}=0.953 fm. The magnetic moments, charge radii, and axial-vector coupling-constant ratios for octet baryons are also calculated with the appropriate center-of-mass correction. The results so obtained are quite comparable to experimental data.

• OSTI ID: 6916150
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 41:5; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
QUARK MODEL
NUCLEONS
ELECTROMAGNETIC FORM FACTORS
BAG MODEL
COUPLING CONSTANTS
DIRAC EQUATION
GLUONS
MAGNETIC MOMENTS
MASS SPECTRA
MESONS
WAVE FUNCTIONS
BOSONS
COMPOSITE MODELS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EQUATIONS
EXTENDED PARTICLE MODEL
FERMIONS
FORM FACTORS
FUNCTIONS
HADRONS
MATHEMATICAL MODELS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
SPECTRA
WAVE EQUATIONS
645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties
645204 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties