Abstract
We propose measurements of weighted differences of the angular observables in the rare decays . The proposed observables are very sensitive to the difference between the Wilson coefficients and for decays into electrons and muons, respectively. At the same time, the charm-induced hadronic contributions are kinematically suppressed to in the region , as long as lepton-flavor universality breaking occurs only in . This suppression becomes stronger for the region of low hadronic recoil, .
- Received 9 November 2016
DOI:https://doi.org/10.1103/PhysRevD.95.035029
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