Abstract
Using a sample of events collected by the BESIII detector at BEPCII during 2009 and 2012, we study the hadronic process. For the first time, we measure the branching ratio . We search for the state in the invariant mass spectra. No evidence is found and we estimate the upper limit on the branching fraction at 90% confidence level to be .
- Received 13 February 2019
DOI:https://doi.org/10.1103/PhysRevD.99.071101
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