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

J.G. Körner1; F. Krajewski; A.A. Pivovarov

doi:doi:10.1007/s100520000341

EPJ

Asymptotic structure of perturbative series for $\tau$ lepton decay observables: m_s² corrections

J.G. Körner¹ - F. Krajewski¹ - A.A. Pivovarov^1,2

¹ Institut für Physik, Johannes-Gutenberg-Universität, Staudinger Weg 7, 55099 Mainz, Germany
² Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia

Abstract
In a previous paper [1] we performed an analysis of the asymptotic structure of the perturbation theory series for semileptonic $\tau$ lepton decays in the massless limit. We extend our analysis to the Cabibbo suppressed $\Delta S=1$ decay modes of the $\tau$ lepton. In particular we address the problem of m_s² corrections to the theoretical formulas. The properties of the asymptotic behavior of the finite order perturbation theory series for the coefficient functions of the m_s² corrections are studied.

ICAMDATA 2022, 12th International Conference on Atomic and Molecular Data and Their Applications
25-29 September 2022
Bari, Italy

EPJ

Asymptotic structure of perturbative series for lepton decay observables: ms2 corrections

Conference announcements

Asymptotic structure of perturbative series for $\tau$ lepton decay observables: m_s² corrections