Nucleon-antinucleon annihilation via confined quark-gluon states

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.32.1672· OSTI ID:5371798

Tegen, R; Mizutani, T; Myhrer, F

In this work we use the quark degrees of freedom in a nucleon to calculate a nucleon-antinucleon annihilation potential. The range of this annihilation is determined by the long-range confinement forces giving the quark wave functions which also reproduce the nucleon charge radius. We find that NN-bar scattering is sensitive to the annihilation mainly between 0.5 and 2.0 fm. Our annihilation model shows that the dominant annihilation contribution to NN-bar scattering comes from qqq-bar q-bar multigluon intermediate states and that the intermediate qq-bar multigluon as well as pure gluonic states are less important for NN-bar scattering.

• Research Organization: Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208
• OSTI ID: 5371798
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 32:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BAG MODEL
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSON-EXCHANGE MODELS
BOSONS
CHIRAL SYMMETRY
COMPOSITE MODELS
COUPLED CHANNEL THEORY
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FIELD THEORIES
FUNCTIONS
GLUONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
OPTICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE RADII
PERIPHERAL MODELS
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SCATTERING
SYMMETRY
WAVE FUNCTIONS