Published February 7, 1977
| Version v1
Journal article
The decay π → eγγ: PCAC and the quark model
Description
The PCAC sum rule for radiative pion decay is reexamined allowing for a singular short-distance behaviour of the axial divergence. It is shown that the sum rule of Das, Mathur and Okubo follows from a weak form of PCAC even if the axial divergence is allowed to have dimension three, appropriate for free (or asymptotically free) quarks. No quark mass corrections are found. (Auth.)
Additional details
Identifiers
Publishing Information
- Journal Title
- Nuclear Physics B
- Journal Volume
- 118
- Journal Issue
- 5
- Series
- Nucl. Phys., B.
- Journal Page Range
- 493-505
- ISSN
- 0550-3213
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 8317062
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- AMPLITUDES; DISPERSION RELATIONS; ELECTROMAGNETIC FORM FACTORS; GAMMA RADIATION; LIGHT CONE; MATRIX ELEMENTS; NEUTRINOS; PARTICLE DECAY; PARTICLE KINEMATICS; PCAC THEORY; PIONS PLUS; POSITRONS; QUARK MODEL; QUARKS; SINGULARITY; SPECTRAL FUNCTIONS; SUM RULES; WARD IDENTITY
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BOSONS; COMPOSITE MODELS; DECAY; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FORM FACTORS; FUNCTIONS; HADRONS; IONIZING RADIATIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATTER; MESONS; PARTICLE MODELS; PARTICLE PROPERTIES; PIONS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; RADIATIONS; SPACE-TIME
Optional Information
- Notes
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