Low-energy photo- and electroproduction for physical pions. I. Ward-identity and chiral-symmetry-breaking structure

Journal Article · Sat Sep 01 04:00:00 EDT 1979 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.20.1069· OSTI ID:5996205

MacMullen, J T; Scadron, M D

The Ward identities of current algebra are combined with gauge-invariance constraints, on-shell partial conservation of the axial-vector current, and the Bjorken limit to obtain the low-energy expressions of the pion photo- and electroproduction invariant amplitudes for physical pions.

• Research Organization: Physics Department, University of Arizona, Tucson, Arizona 85721
• OSTI ID: 5996205
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 20:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645302 -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Electromagnetic & Weak Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
CHIRAL SYMMETRY
CURRENT ALGEBRA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
GAUGE INVARIANCE
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PCAC THEORY
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PHOTOPRODUCTION
PIONS
PSEUDOSCALAR MESONS
SYMMETRY
SYMMETRY BREAKING
WARD IDENTITY