Perturbative QCD corrections to the ratio R for tau decay

Journal Article · Wed Mar 01 00:00:00 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), Vol. 39:5
• Country of Publication: United States
• Language: English

Related Subjects

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