Asymptotic structure of perturbative series for $τ$ lepton decay observables: $m_s^2$ corrections

J. G. Koerner; F. Krajewski; A. A. Pivovarov

doi:10.1007/s100520050739

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arXiv · hep-ph/9911311

Asymptotic structure of perturbative series for $τ$ lepton decay observables: $m_s^2$ corrections

J. G. Koerner·F. Krajewski·A. A. Pivovarov

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Abstract

In a previous paper we performed an analysis of asymptotic structure of perturbation theory series for semileptonic $τ$-lepton decays in massless limit. We extend our analysis to the Cabibbo suppressed $ΔS=1$ decay modes of the $τ$ lepton. In particular we address the problem of $m_s^2$ corrections to theoretical formulas. The properties of the asymptotic behavior of the finite order perturbation theory series for the coefficient functions of the $m_s^2$ corrections are studied.

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J. G. Koerner, F. Krajewski, A. A. Pivovarov. 1999-11-11. Asymptotic structure of perturbative series for $τ$ lepton decay observables: $m_s^2$ corrections. https://doi.org/10.1007/s100520050739

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