Relativistic three-body approach to NN scattering at intermediate energies

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.2105· OSTI ID:5610746

van Faassen, E; Tjon, J A

The Bethe-Salpeter equation for coupled-channel N-..delta.. scattering is extended to satisfy unitarity in the NN and NN..pi.. sectors. The procedure eliminates the unitarity violations characteristic of the standard ladder Bethe-Salpeter equation in the inelastic region, and improves the description of pion production near threshold. Results are presented for the NN phase shifts and a number of observables up to 1 GeV. In particular, the /sup 1/D/sub 2/ inelasticity is found to be considerably smaller than found from phase shift analysis. In this context, the importance of the pion deuteron channel for the inelasticity parameter is pointed out.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 5610746
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:6; 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 REACTIONS
BARYON-BARYON INTERACTIONS
BETHE-SALPETER EQUATION
BOSONS
COUPLED CHANNEL THEORY
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
FIELD THEORIES
GENERAL RELATIVITY THEORY
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
MANY-BODY PROBLEM
MESONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHASE SHIFT
PIONS
PROPAGATOR
PSEUDOSCALAR MESONS
RELATIVITY THEORY
SCATTERING
SELF-ENERGY
THREE-BODY PROBLEM
THRESHOLD ENERGY
UNITARITY