Abstract
The E799-II (KTeV) experiment at Fermilab has collected 83 262 events above a background of 79 events. We measure a decay width, normalized to the (, , ) decay width, of . We also measure parameters of two form factor models. In the Bergström-Massó-Singer parametrization, we find . We separately fit for the first parameter of the D’Ambrosio-Isidori-Portolés model and find .
- Received 23 February 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.051804
©2007 American Physical Society