Abstract
Using events collected with the BESIII detector and a single-baryon tagging technique, we present the first observation of the decays and . The branching fractions are measured to be and . Here, the first and second uncertainties are statistical and systematic, respectively. In addition, the parameter associated with the angular distribution for the decay is determined to be , in agreement with theoretical predictions within one standard deviation.
- Received 14 September 2021
- Accepted 15 October 2021
- Corrected 9 February 2023
DOI:https://doi.org/10.1103/PhysRevD.104.092012
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
Physics Subject Headings (PhySH)
Corrections
9 February 2023
Correction: The omission of a support statement in the Acknowledgments has been fixed.