Published April 13, 1992 | Version v1
Journal article Metadata-only

QCD analysis of the tau hadronic width

Creators

  • 1. Dept. of Physics and Astronomy, Northwestern Univ., Evanston, IL (United States)
  • 2. Lab. de Physique Mathematique, USTL, 34 - Montpellier (France)
  • 3. Theoretical Physics Div., CERN, Geneva (Switzerland)

Description

The total τ hadronic width can be accurately calculated using analyticity and the operator product expansion. The theoretical analysis of this observable is updated to include all available perturbative and non-perturbative corrections. Experimental measurements of τ decay rates are used to determine with high precision the QCD running coupling constant at the scale of the τ mass. The analysis is also used to study the present discrepancy between the experimental measurements of the leptonic branching fractions of the τ and its total lifetime. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics. B, Particle Physics
Journal Volume
373
Journal Issue
3
Series
Nucl. Phys., B Part. Phys.
Journal Page Range
581-612
ISSN
0550-3213
CODEN
NUPBB

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23055720
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANALYTIC FUNCTIONS; BRANCHING RATIO; CORRECTIONS; CORRELATION FUNCTIONS; CORRELATIONS; COUPLING CONSTANTS; ENERGY DEPENDENCE; FIELD OPERATORS; FOUR-DIMENSIONAL CALCULATIONS; MANY-DIMENSIONAL CALCULATIONS; OPERATOR PRODUCT EXPANSION; PARTICLE WIDTHS; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; SEMILEPTONIC DECAY; STRONG INTERACTIONS; TAU PARTICLES; WEINBERG LEPTON MODEL
Descriptors DEC
BASIC INTERACTIONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FUNCTIONS; HEAVY LEPTONS; INTERACTIONS; LEPTONS; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; PARTICLE DECAY; PARTICLE MODELS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; QUANTUM OPERATORS; SERIES EXPANSION; UNIFIED GAUGE MODELS; WEAK PARTICLE DECAY