Symmetry (Oct 2021)

QED-Corrections to Weak Decays

  • Roman Zwicky

DOI
https://doi.org/10.3390/sym13112036
Journal volume & issue
Vol. 13, no. 11
p. 2036

Abstract

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Important aspects of QED-corrections to hadronic decays are reviewed with emphasis on conceptual points such as infrared divergences and structure dependence. These matter are illustrated for the e+e−→hadrons, the leptonic decay π+→ℓ+ν¯ and the semileptonic decay B→πℓ+ν¯. Aspects of structure dependence include the (non)-cancellation of hard-collinear logs (e.g., lnmℓ and lnmπ) of charged final states.

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