Pion-pole term in electroproduction of off-mass-shell pions
Journal Article
·
· Phys. Rev. D; (United States)
The dependence of the invariant amplitudes for electroproduction of off-mass-shell pions on the pion Born term is investigated when current-algebra Ward identities and PCAC (partial conservation of axial-vector current) are used to determine pion electroproduction invariant amplitudes. We show that an amplitude satisfying the Ward identities can be constructed starting from the usual Born terms which do not satisfy them and that this same amplitude will be obtained for a large class of input Born terms.
- Research Organization:
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3
- OSTI ID:
- 5828329
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 28:1; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BORN APPROXIMATION
BOSONS
CURRENT ALGEBRA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATRICES
MATRIX ELEMENTS
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PCAC THEORY
PIONS
PSEUDOSCALAR MESONS
S MATRIX
WARD IDENTITY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BORN APPROXIMATION
BOSONS
CURRENT ALGEBRA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATRICES
MATRIX ELEMENTS
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PCAC THEORY
PIONS
PSEUDOSCALAR MESONS
S MATRIX
WARD IDENTITY