Abstract
We combine our new results for the and corrections to , and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the meson, our calculation gives .
- Received 9 November 2013
DOI:https://doi.org/10.1103/PhysRevLett.112.101801
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