Threshold pion absorption in nuclei

Journal Article · Sat Jul 01 04:00:00 EDT 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.18.317· OSTI ID:6733973

Bertsch, G F; Riska, D O

We attempt to explain threshold pion abosrption in nuclei using simple pion rescattering mechanicsms. While the model is successful in the case of the deuteron it leads to 10--30 % too small absorption rates in other nuclei. We also study a rho..omega.. exchange absorption mechanism that does not act in the deuteron, but find that it can only remove a small part of the remaining discrepancy. The two-nucleon absorption mechanism accounts for 75% of the imaginary part of the S-wave pion nucleus optical potential.

• Research Organization: Department of Physics and Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
• OSTI ID: 6733973
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:1; 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
ABSORPTION
AMPLITUDES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DEUTERONS
ENERGY
FERMI GAS MODEL
FUNCTIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HAMILTONIANS
INTERACTIONS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MATRIX ELEMENTS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
OPTICAL MODELS
PARTIAL WAVES
PARTICLE INTERACTIONS
PION REACTIONS
PION-NUCLEON INTERACTIONS
QUANTUM OPERATORS
RESCATTERING
S WAVES
SCATTERING
SCATTERING AMPLITUDES
SHELL MODELS
THRESHOLD ENERGY
WAVE FUNCTIONS