Stretched excitations and the spin-dependent part of the pion-nucleon interaction

Journal Article · Fri Apr 01 04:00:00 EST 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.27.1636· OSTI ID:6081988

Carr, J A; Petrovich, F; Halderson, D; Holtkamp, D B; Cottingame, W B

The p-wave form of the spin-orbit operator provides the basis for a single scattering model for the excitation of unnatural parity levels in pion-nucleus scattering in the region of the ..delta.. resonance. The model is found to give a reasonable description of the ..pi../sup +/ and ..pi../sup -/ experimental cross sections for the excitation of stretched 4/sup -/ and 6/sup -/ states in /sup 16/O and /sup 28/Si. In the calculations the interaction strength was fixed from the free pion-nucleon data and the spin transition densities were determined from recent (e,e') and (p,p') data. A schematic discussion of possible corrections to the model is also presented.

• Research Organization: Department of Physics, Florida State University, Tallahassee, Florida 32306
• OSTI ID: 6081988
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
CHARGED-PARTICLE REACTIONS
COUPLING
CROSS SECTIONS
DISTORTED WAVE THEORY
ENERGY DEPENDENCE
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
IMPULSE APPROXIMATION
INELASTIC SCATTERING
INTERACTIONS
INTERMEDIATE COUPLING
ISOSPIN
ISOTOPES
L-S COUPLING
LIGHT NUCLEI
MATRICES
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
OXYGEN 16
OXYGEN 16 TARGET
OXYGEN ISOTOPES
PARITY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
PION-NUCLEON INTERACTIONS
S MATRIX
SCATTERING
SILICON 28
SILICON 28 TARGET
SILICON ISOTOPES
SPIN
STABLE ISOTOPES
TARGETS