Pion-nucleus optical potential in the isobar-doorway model

Journal Article · Fri May 01 00:00:00 EDT 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.2140· OSTI ID:6531323

Saharia, A N; Woloshyn, R M; Kisslinger, L S

The isobar-doorway model is used to parametrize the pion-nucleus optical potential so as to take into account the interaction of the D with other nucleons as well as coupling to inelastic and reaction channels. The parameters of the model are determined by fitting elastic scattering angular distributions. It is found that the nonlocality associated with the isobar propagation is important in the resonance energy region. This may indicate that the use of impulse approximation in obtaining the pion optical potential may be doubtful even if we introduce a complex shift in the energy at which the pion-nucleon scattering amplitude is evaluated to get a first-order optical potential.

• Research Organization: TRIUMF, Vancouver, British Columbia, Canada, V6T 2A3
• OSTI ID: 6531323
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
IMPULSE APPROXIMATION
INELASTIC SCATTERING
INTERACTIONS
ISOBAR MODEL
MATHEMATICAL MODELS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEAR REACTIONS
OPTICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
PION REACTIONS
PION-NUCLEON INTERACTIONS
PROPAGATOR
SCATTERING
SCATTERING AMPLITUDES