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Pak A, Czarnecki A. Mass effects in muon and semileptonic b-->c decays. Phys Rev Lett. 2008;100(24):241807doi: 10.1103/PhysRevLett.100.241807.
Pak, A., & Czarnecki, A. (2008). Mass effects in muon and semileptonic b-->c decays. Physical review letters, 100(24), 241807. https://doi.org/10.1103/PhysRevLett.100.241807
Pak, Alexey, and Czarnecki, Andrzej. "Mass effects in muon and semileptonic b-->c decays." Physical review letters vol. 100,24 (2008): 241807. doi: https://doi.org/10.1103/PhysRevLett.100.241807
Pak A, Czarnecki A. Mass effects in muon and semileptonic b-->c decays. Phys Rev Lett. 2008 Jun 20;100(24):241807. doi: 10.1103/PhysRevLett.100.241807. Epub 2008 Jun 20. PMID: 18643576.
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Phys Rev Lett. 2008 Jun 20;100(24):241807. doi: 10.1103/PhysRevLett.100.241807. Epub 2008 Jun 20.

Mass effects in muon and semileptonic b-->c decays.

Physical review letters

Alexey Pak, Andrzej Czarnecki

Affiliations

  1. Department of Physics, University of Alberta Edmonton, AB T6G 2G7, Canada.

PMID: 18643576 DOI: 10.1103/PhysRevLett.100.241807

Abstract

Quantum chromodynamics (QCD) effects in the semileptonic decay b-->clnu are evaluated to the second order in the coupling constant, O(alpha(s){2}), and to several orders in the expansion in quark masses, m{c}/m{b}. Corrections are calculated for the total decay rate as well as for the first two moments of the lepton energy and the hadron system energy distributions. Translated into QED and applied to the muon decay, they decrease its predicted rate by -0.43 ppm.

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