Reconciling the FOPT and CIPT Predictions for the Hadronic Tau Decay Rate

Miguel Angel Benitez-Rathgeb, Diogo R. Boito, André H. Hoang (Korresp. Autor*in), Matthias Jamin

Veröffentlichungen: Beitrag in FachzeitschriftMeeting Abstract/Conference PaperPeer Reviewed

Abstract

In a recent work it was suggested that the discrepancy observed in the perturbation series behavior of the $\tau$ hadronic decay rate determined in the FOPT and CIPT approaches can be explained from a different infrared sensitivity inherent to both methods, assuming that the major source of the discrepancy is the asymptotic behavior of the series related to the gluon condensate renormalon. This implies that the predictions of both methods may be reconciled in infrared subtracted perturbation theory. In this talk we explore this implication concretely in the large-$\beta_0$ approximation, where the perturbation series is known to all orders, using a renormalon-free scheme for the gluon condensate.
OriginalspracheEnglisch
FachzeitschriftSciPost Physics
PublikationsstatusEingereicht - 2021
VeranstaltungThe 16th International Workshop on Tau Lepton Physics (TAU2021) - Online conference, Unbekannt/undefiniert
Dauer: 27 Sept. 20211 Okt. 2021
https://indico.cern.ch/event/848732/

ÖFOS 2012

  • 103034 Teilchenphysik

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