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Renormalization scheme and higher loop stability in hadronic \(\tau\) decay within analytic perturbation theory

  • K.A. Milton
  • I.L. Solovtsov
  • O.P. Solovtsova
  • V.I. Yasnov
Theoretical physics

Abstract.

We apply an analytic description to the inclusive decay of the \(\tau\) lepton. We argue that this method gives not only a self-consistent description of the process both in the timelike region by using the initial expression for \(R_\tau\) and in the spacelike domain by using the analytic properties of the hadronic correlator, but also leads to the fact that theoretical uncertainties associated with unknown higher-loop contributions and renormalization scheme dependence can be reduced dramatically.

Keywords

Perturbation Theory Analytic Description Analytic Property Analytic Perturbation Theoretical Uncertainty 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • K.A. Milton
    • 1
  • I.L. Solovtsov
    • 1
  • O.P. Solovtsova
    • 1
  • V.I. Yasnov
    • 2
  1. 1.Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019 USAUS
  2. 2.Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, RussiaRU

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