Abstract
We report on a study of the decay carried out as a part of the KTeV/E799 experiment at Fermilab. The 1997 data yielded a sample of 1543 events, including an expected background of events. An effective form factor was determined from the observed distribution of the invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be
- Received 23 October 2000
DOI:https://doi.org/10.1103/PhysRevD.64.012003
©2001 American Physical Society