Pion double charge exchange scattering above the delta resonance
Data are presented on pion-nucleus double-charge-exchange scattering at energies between 300 and 500 MeV, the highest energies measured so far, together with a review of results at lower energies. The small-angle excitation functions disagree with predictions based on a sex-quark cluster model and on an optical model consistent with single-charge-exchange scattering at these energies, but they are consistent with a distorted-wave calculation. Data on f{sub 7/2}-shell nuclei are in partial agreement with a two-amplitude model which is successful at lower energies. In order to achieve good understanding of this process at these energies, more work; both experimental and theoretical, is needed. 16 refs., 6 figs.
- Research Organization:
- New Mexico State Univ., Las Cruces, NM (USA). Dept. of Physics
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- FG04-88ER40403
- OSTI ID:
- 6606798
- Report Number(s):
- CONF-8908131-7; ON: DE91000606; TRN: 91-000369
- Resource Relation:
- Conference: 2. LAMPF workshop on pion-nucleus double charge exchange, Los Alamos, NM (USA), 9-11 Aug 1989
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DELTA BARYONS
PION-NUCLEON INTERACTIONS
NUCLEI
PION REACTIONS
CHARGE EXCHANGE
ANGULAR DISTRIBUTION
CROSS SECTIONS
F STATES
ISOBARIC ANALOGS
PIONS
QUARK MODEL
SCATTERING
BARYONS
BOSONS
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
FERMIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
N BARYONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PSEUDOSCALAR MESONS
645103* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties
651000 - Nuclear Physics