Separable model for the antinucleon-nucleon elastic and annihilation interaction

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

DOI:https://doi.org/10.1103/PhysRevC.32.1261· OSTI ID:5312462

Schweiger, W; Haidenbauer, J; Plessas, W

In the framework of a coupled-channel approach we construct a separable potential model for the low- and medium-energy antinucleon-nucleon interaction. The elastic part is derived from the meson-exchange Paris potential and represented in an on-shell and off-shell equivalent separable form. In analogy to microscopic theories the annihilation interaction is also described by a separable potential but with phenomenological form factors. Coulomb corrections to the hadronic interaction are taken into account rigorously. We present results for total, elastic, and charge-exchange cross sections and compare them to existing experimental data at low and medium energies. A first application of the model to the calculation of hadronic level shifts in antiprotonic hydrogen is reported.

• Research Organization: Institut fuer Theoretische Physik, Karl-Franzens-Universitat Graz, A-8010 Graz, Austria
• OSTI ID: 5312462
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 32:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

645205* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 0-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BRANCHING RATIO
CHARGE-EXCHANGE REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ENERGY DEPENDENCE
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
SCATTERING
SHELL MODELS
TOTAL CROSS SECTIONS