Semimicroscopic theory of pion-nucleus inelastic scattering

Journal Article · Wed Jun 01 04:00:00 EDT 1983 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5014313

Akulinichev, S V; Vagradov, G M; Goi, A A

Inelastic scattering of ..pi.. mesons by nuclei is studied by the methods of many-body field theory. The traditional multiple-scattering-theory amplitude for pion-nucleus inelastic scattering is generalized. Transition to a semimicroscopic description is performed. It is shown that for weakly excited nuclear states the energy dependence of the particle-hole wave function is approximately described by a delta function. A parametrization of the irreducible scattering operator for energies near the ..delta.. resonance is suggested. Cross sections for inelastic scattering of 100 and 120 MeV pions by /sup 12/C accompanied by excitation of the 4.44 MeV 2/sup +/ state are calculated. Considerable sensitivity of the cross sections to the microscopic structure of the final excited state and an appreciable difference between the cross sections for ..pi../sup -/ and ..pi../sup +/, associated with the Coulomb effects for the intermediate isobar, are discovered. Qualitative agreement with the available experimental data is obtained.

• Research Organization: Institute of Nuclear Research, USSR Academy of Sciences
• OSTI ID: 5014313
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 37:6; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

651315* -- Nuclear Properties & Reactions
A=6-19
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON RESONANCES
BARYONS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DELTA-1236 RESONANCES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FERMIONS
HADRON REACTIONS
HADRONS
INELASTIC SCATTERING
MATHEMATICAL MODELS
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
MULTIPLE SCATTERING
N RESONANCES
NUCLEAR MODELS
NUCLEAR REACTIONS
PARTICLE-HOLE MODEL
PION REACTIONS
RESONANCE PARTICLES
SCATTERING
TARGETS