Nucleon structure with pion clouds in a flux-tube quark model

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.195· OSTI ID:6954894

Kumano, S ^[1]

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1. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (US) Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801

Nucleon structure with pion clouds is studied in the framework of a flux-tube quark model. The meson clouds are produced by breaking flux tubes in the nucleon; then a baryon is described by three valence quarks connected by color fields and other configurations including sea quarks. These sea quarks (or meson clouds) generate baryon decay widths and shift their masses; therefore, the hadron spectroscopy in constitutent-quark models should be investigated again by including these mass shifts. In this flux-tube model, the Yukawa potential is explained by a piece of the flux tube breaking off from a nucleon and attaching itself to the other.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6954894
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYONS
BOSONS
COLOR MODEL
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
HADRONS
MATHEMATICAL MODELS
MESONS
NUCLEAR POTENTIAL
NUCLEONS
PARTICLE MODELS
PARTICLE STRUCTURE
PIONS
POTENTIALS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
YUKAWA POTENTIAL