Abstract
We use our lattice QCD computation of the form factors to determine the differential decay rate for the semitauonic decay channel and construct the ratio of branching fractions . We find and give an error budget. We also extend the relevant angular observables, which were recently suggested for the study of lepton flavor universality violating effects in , to and make predictions for their values under different new physics scenarios.
- Received 22 July 2020
- Accepted 15 October 2020
DOI:https://doi.org/10.1103/PhysRevLett.125.222003
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.
Published by the American Physical Society