Published February 1, 1992 | Version v1
Journal article Metadata-only

Transition form factors in π0, η, and η' couplings to γγ*

Creators

  • 1. Departament Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, 08800 Vilanova, Barcelona (Spain)
  • 2. Theory Division, European Organization For Nuclear Research (CERN), CH-1211, Geneva-23 (Switzerland)
  • 3. Grup de Fisica Teorica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona (Spain)
  • 4. Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, 18071 Granada (Spain)

Description

Recent measurements of the transition form factors for the Pγγ* vertices, with P=π0, η, and η', are compared with different models. These include vector-meson dominance, constituent-quark loops, the QCD-inspired interpolation by Brodsky-Lepage, and chiral perturbation theory. General agreement is observed and differences--due to SU(3) breaking--are stressed and discussed

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
45
Journal Issue
3
Series
Phys. Rev., D Part. Field.
Journal Page Range
986-989
ISSN
0556-2821
CODEN
PRVDA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
23080268
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CHIRAL SYMMETRY; COUPLING; ELECTROMAGNETIC FORM FACTORS; MESONS; PERTURBATION THEORY; PIONS NEUTRAL; QUANTUM CHROMODYNAMICS; QUARKS; SU-3 GROUPS; SYMMETRY BREAKING; VECTOR DOMINANCE MODEL; VECTOR MESONS
Descriptors DEC
BOSONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FORM FACTORS; HADRONS; LIE GROUPS; MATHEMATICAL MODELS; PARTICLE MODELS; PARTICLE PROPERTIES; PIONS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SU GROUPS; SYMMETRY; SYMMETRY GROUPS