Analytic perturbation theory and inclusive τ decay

1997/06/30 by Kimball A. Milton, K. A. Milton, I. L. Solovtsov +1 · 5 citations
Physics and Astronomy · #Chiral perturbation theory #Coupling constant #Hadron #High-Energy Particle Collisions Research #Lepton #Mathematical physics #Particle physics #Particle physics theoretical and experimental studies #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #hep-ph

paper · pdf · doi:10.1016/s0370-2693(97)01207-0

published as Phys.Lett. B415 (1997) 104-110 · 10 pages, 2 figures, REVTeX, psfig, penultimate paragraph added

arxiv created 1997/08/26 · openalex publication_date 1997/12/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We apply analytic perturbation theory to the inclusive decay of a τ lepton into hadrons. It is shown that the resulting analyticity of the coupling constant strongly influences the value of the QCD Λ-parameter extracted from the experimental data on τ decay.

Citations

• Analytic Model for the QCD Running Coupling with Universalα¯s(0)Value
• Analytic perturbation theory in QCD and Schwinger’s connection between theβfunction and the spectral density
• Analytic properties of the QCD running coupling constant and τ decay

Cited by

• Fractional analytic perturbation theory in Minkowski space and applicationto Higgs boson decay into abb¯pair
• Dispersive approach to QCD and hadronic contributions to electroweak observables
• Perturbative QCD in acceptable schemes with holomorphic coupling
• Hadronic contributions to electroweak observables within DPT
• Techniques of evaluation of QCD low-energy physical quantities with running coupling with infrared fixed point