Radiative corrections to [pi][sub [ital l]2] decays
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
- Department of Physics, New York University, New York, New York 10003 (United States)
Radiative corrections to [pi][sub [ital l]2] ([ital l]=[ital e] or [mu]) decays are examined. Higher order electroweak leading logarithms short-distance QCD corrections, and structure dependent effects are incorporated. The results are employed to (1) test [ital e]-[mu] universality in [Gamma]([pi][r arrow][ital e][bar [nu]][sub [ital e]]([gamma]))/[Gamma]([pi][r arrow][mu][bar [nu]][sub [mu]]([gamma])), (2) extract an [ital f][sub [pi]] which is used to check the Goldberger-Treiman relation and PCAC-anomaly prediction for [Gamma]([pi][sup 0][r arrow][gamma][gamma]), and (3) determine the tau partial decay rate [Gamma]([tau][r arrow][pi][nu][sub [tau]]([gamma])).
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5287399
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:22; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
662350 -- Decays of Mesons-- (1992-)
662390* -- Electromagnetic Processes & Properties-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
CORRECTIONS
DECAY
ELECTRON-MUON UNIVERSALITY
ELECTRON-MUON-TAU UNIVERSALITY
ELEMENTARY PARTICLES
FIELD THEORIES
GOLDBERGER-TREIMAN RELATION
HADRONS
INTERACTIONS
LEPTONIC DECAY
MESONS
PARTICLE DECAY
PCAC THEORY
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIVE CORRECTIONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY
662390* -- Electromagnetic Processes & Properties-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
CORRECTIONS
DECAY
ELECTRON-MUON UNIVERSALITY
ELECTRON-MUON-TAU UNIVERSALITY
ELEMENTARY PARTICLES
FIELD THEORIES
GOLDBERGER-TREIMAN RELATION
HADRONS
INTERACTIONS
LEPTONIC DECAY
MESONS
PARTICLE DECAY
PCAC THEORY
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIVE CORRECTIONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY