Published 1995
| Version v1
Report
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The off-shell axial anomaly via the γ*π0 → γ transition
Creators
- 1. Univ. of Washington, Seattle, WA (United States). Institute for Nuclear Theory
- 2. Kent State Univ., OH (United States)
- 3. Argonne National Lab., IL (United States)
Description
The γ*π0 → γ form factor, including the extension off the pion mass-shell, is obtained from a generalized impulse approximation within a QCD-based model field theory known to provide an excellent description of the pion charge form factor. This approach implements dressing of the vertex functions and propagators consistent with dynamical chiral symmetry breaking, gauge invariance, quark confinement and perturbative QCD. Soft nonperturbative behavior, dictated by the axial anomaly, is found to evolve to the perturbative QCD limit only for Q2 ≥ 20 GeV2
Availability note (English)
MF available from INIS under the Report Number; Also available from OSTI as DE95004762; NTIS; US Govt. Printing Office Dep.Files
26043081.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- DOE/ER/40561--172
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26043081
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- FORM FACTORS; PIONS NEUTRAL; QUANTUM CHROMODYNAMICS; QUANTUM FIELD THEORY; VERTEX FUNCTIONS
- Descriptors DEC
- BOSONS; ELEMENTARY PARTICLES; FIELD THEORIES; FUNCTIONS; HADRONS; MESONS; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS