Abstract
With the full data sample of pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay is studied with the hadronic decays and . The polarization in two-body hadronic decays is measured, as well as the ratio of the branching fractions , where denotes an electron or a muon. Our results, and , are consistent with the theoretical predictions of the standard model. The polarization values of are excluded at the 90% confidence level.
4 More- Received 31 August 2017
DOI:https://doi.org/10.1103/PhysRevD.97.012004
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