Measurement of the branching fraction for
arXiv:2109.06750 · doi:10.1103/PhysRevD.104.092003
Abstract
Analyzing events collected with the BESIII detector at the BEPCII collider, the decay is observed for the first time. The branching fraction for this decay is determined to be =, where the first uncertainty is statistical and the second is systematic.
9 pages, 5 figures