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

Journal Article · Thu Mar 01 04:00:00 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), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYONS
BOSONS
COMPOSITE MODELS
COUPLING CONSTANTS
DIFFERENTIAL EQUATIONS
DIRAC EQUATION
ELECTROMAGNETIC FORM FACTORS
ELEMENTARY PARTICLES
EQUATIONS
EXTENDED PARTICLE MODEL
FERMIONS
FORM FACTORS
FUNCTIONS
GLUONS
HADRONS
MAGNETIC MOMENTS
MASS SPECTRA
MATHEMATICAL MODELS
MESONS
NUCLEONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUARK MODEL
SPECTRA
WAVE EQUATIONS
WAVE FUNCTIONS