Abstract
Based on a data sample of decays collected with the BESIII experiment, a search for the flavor changing neutral current transition is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of is determined to be at the 90% confidence level. The result is consistent with expectations from the standard model, and no evidence for new physics is found.
- Received 12 February 2018
DOI:https://doi.org/10.1103/PhysRevD.97.091102
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