Abstract
Using events collected with the BESIII detector at the BEPCII storage rings, we observe for the first time the process , with a significance of ( including systematic uncertainties). The product branching fraction of is measured to be , where the first error is statistical and the second is systematic. This measurement provides information on the production near threshold coupling to and improves the understanding of the dynamics of decays to four-body processes.
- Received 18 August 2014
- Publisher error corrected 13 January 2015
DOI:https://doi.org/10.1103/PhysRevD.90.052009
© 2014 American Physical Society
Corrections
13 January 2015