Threshold behavior of double-pion electroproduction from nuclei
The leading contribution of threshold double-pion production to inelastic electron scattering from nuclei through a given angle and with a given energy loss is calculated in a Fermi gas model of the nuclear spectrum. The isobar model characterized by the threshold creation of a ..pi..-..delta.. pair constitutes the one-body input with the contact term providing the dominant contribution. The cross sections are found to have an eta/sup 5/ dependence near threshold, where eta = (epsilon/sub 1/-epsilon/sub 2/-2m/sub ..pi../)/m/sub ..pi../ for initial and final electron energies, epsilon/sub 1/ and epsilon/sub 2/. The technique utilized of Fermi averaging near threshold is shown to reproduce the threshold behaviors of the various components of the analogous incoherent electroproduction cross section found earlier by Czyz and Walecka.
- Research Organization:
- Theoretical Physics Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2J1
- OSTI ID:
- 6042129
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:1; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BASIC INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON REACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY
FERMI GAS MODEL
FORM FACTORS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
ISOBAR MODEL
LEPTON REACTIONS
MATHEMATICAL MODELS
MESONS
NUCLEAR MODELS
NUCLEAR REACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
SCATTERING
THRESHOLD ENERGY