Perturbative QCD corrections to the ratio R for tau decay

Journal Article · Wed Mar 01 04:00:00 EST 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.1458· OSTI ID:6435951

Braaten, E

The perturbative QCD correction to the semihadronic decay rate of a heavy lepton is expressed as an expansion in ..cap alpha../sub s/. In the case of the tau lepton, the ratio of the semihadronic and electronic decay rates is R = 3(1+..cap alpha../sub s//..pi..+5.20(..cap alpha../sub s//..pi..)/sup 2/ +104.0(..cap alpha../sub s//..pi..)/sup 3/). The use of R to give a precise determination of ..cap alpha../sub s/ is advocated.

• Research Organization: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208
• OSTI ID: 6435951
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
COUPLING CONSTANTS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
FERMIONS
FIELD THEORIES
HEAVY LEPTONS
INCLUSIVE INTERACTIONS
INTERACTIONS
KOBAYASHI-MASKAWA MATRIX
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASS
MATRICES
MATRIX ELEMENTS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RENORMALIZATION
SELF-ENERGY
TAU PARTICLES
UNIFIED-FIELD THEORIES