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  • Letter
  • Open Access

Three-loop corrections to the muon and heavy quark decay rates

Michał Czakon

Andrzej Czarnecki and Matthew Dowling

  • Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, D-52056 Aachen, Germany

  • Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada

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Phys. Rev. D 103, L111301 – Published 9 June, 2021

DOI: https://doi.org/10.1103/PhysRevD.103.L111301

Abstract

Recently, O(α3) corrections to the muon decay rate and O(αs3) to heavy quark decays have been determined by Fael, Schönwald, and Steinhauser. This is the first such perturbative improvement of these important quantities in more than two decades. We reveal and explain a symmetry pattern in these new corrections, and confirm the most technically difficult parts of their evaluation.

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Phys. Rev. D 103, L111301– Published 9 June, 2021
  • Received 12 April 2021
  • Accepted 17 May 2021
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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