We have measured the branching ratio of the three-body process in the nonmesonic weak decay of to be . This result was obtained by reproducing the nucleon and the nucleon pair yields introducing a measured final state interaction. At the same time, we have determined the absolute decay widths, and , along with , whose relative ratio has been a long-standing puzzle. Including the three-body process, we have successfully reproduced the nucleon energy distribution, the coincidence two-nucleon angular correlation, and the momentum sum distribution simultaneously.
- Received 5 August 2009
©2009 American Physical Society