Abstract
Using a data sample of decay events collected with the BESIII detector at the center-of-mass energy of , we present a search for the hyperon semileptonic decay which violates the rule. No significant signal is observed, and the upper limit on the branching fraction is determined to be at the 90% confidence level. This result improves the previous upper limit result by about one order of magnitude.
- Received 24 August 2022
- Accepted 20 December 2022
DOI:https://doi.org/10.1103/PhysRevD.107.012002
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