Relativistic NN scattering calculations with. delta. degrees of freedom

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.30.285· OSTI ID:6297506

van Faassen, E E; Tjon, J A

The Bethe-Salpeter equation for NN-N..delta.. scattering is extended to include ..delta delta.. states also. With the exception of /sup 1/S/sub 0/, the effects are small for T = 1 because of dominance by N..delta.. isobaric states. For T = 0 the influence is accordingly larger. Also a quasipotential approximation to the Bethe-Salpeter equation is considered. Substantial differences are found. In particular, the quasipotential results are considerably more sensitive to the coupling parameters of the transition interaction. As a result a better fit to existing experimental phase shift parameters is obtained with the Bethe-Salpeter equation.

• Research Organization: Institute for Theoretical Physics, University of Utrecht, 3508 TA Utrecht, The Netherlands
• OSTI ID: 6297506
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 30:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BETHE-SALPETER EQUATION
ENERGY LEVELS
ENERGY RANGE
EQUATIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOBARIC ANALOGS
ISOSPIN
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL SOLUTION
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHASE SHIFT
POTENTIALS
PROPAGATOR
RELATIVISTIC RANGE
SCATTERING