Hadronic tau decay, pion radiative decay, and pion polarizability

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.30.1509· OSTI ID:6261959

Truong, T N

Using conserved vector current and the first Weinberg sum rule, it is shown that the ''missing'' 10% of the hadronic tau decay could come from the axial-vector current. This implies for ..pi -->..e..nu gamma.. decay, F/sub A/(0)/F/sub V/(0) = 0.50 +- 0.15, and a charged-pion polarizability ..cap alpha../sub ..pi../ = 5 x 10/sup -42/ cm/sup 3/.

• Research Organization: Centre de Physique Theorique de l'Ecole Polytechnique, Plateau de Palaiseau, 91128 Palaiseau, Cedex, France and Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6261959
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 30:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645203 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BOSONS
BRANCHING RATIO
CURRENTS
CVC THEORY
DECAY
DISPERSION RELATIONS
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD THEORIES
HADRONS
HEAVY LEPTONS
LEPTONS
MASSLESS PARTICLES
MESONS
NEUTRINOS
PARTICLE DECAY
PHYSICAL PROPERTIES
PIONS
POLARIZABILITY
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIVE DECAY
SUM RULES
TAU PARTICLES
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY