Isospin dependence of pion absorption on nucleon pairs

Journal Article · Thu Mar 01 04:00:00 EST 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.29.1116· OSTI ID:6824910

Silbar, R R; Piasetzky, E

The suppressed ratio of (..pi../sup -/, pn) to (..pi../sup +/, pp) pion absorption cross sections on /sup 3,4/He has an important contribution from NN' intermediate states, where N' denotes a P/sub 11/ ..pi..N interaction. The order-of-magnitude energy variation of this ratio, from stopped pions to pions above the (3,3) resonance, is reproduced in calculations using a unitary isobar model. We predict a strong asymmetry in the angular distribution of the ratio at higher pion energies.

• Research Organization: Los Alamos National Laboratory, University of California, Los Alamos, New Mexico 87545
• OSTI ID: 6824910
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 29:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651215* -- Nuclear Properties & Reactions
A=1-5
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYONS
CAPTURE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
FERMIONS
HADRON REACTIONS
HADRONS
HELIUM 3 TARGET
HELIUM 4 TARGET
INTERACTIONS
ISOBAR MODEL
ISOSPIN
MATHEMATICAL MODELS
MESON REACTIONS
NUCLEAR REACTIONS
NUCLEONS
PAIR PRODUCTION
PARTICLE MODELS
PARTICLE PROPERTIES
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
SYMMETRY
TARGETS