First Measurement of the Absolute Branching Fraction of $\hat{I}{\cdot }_c\to {\hat{I}}^3{\hat{I}}^3$

BESIII Collaboration, M. Ablikim, M. N. Achasov +691

We apply a tag-and-probe method to precisely measure the absolute branching fraction of the decay $\hat{I}{\cdot }_c\to {\hat{I}}^3{\hat{I}}^3$ with the BESIII experiment at BEPCII. Starting with a large initia…