Abstract
Using the published KTeV sample of decays [1] and a new form factor expansion with a rigorous bound on higher order terms [2], we present a new determination of the form factor and phase space integral. Compared to the previous KTeV result [1], the uncertainty in the new form factor expansion is negligible and results in an overall uncertainty in the phase space integral () that is a factor of 2 smaller: .
- Received 27 August 2006
DOI:https://doi.org/10.1103/PhysRevD.74.097101
©2006 American Physical Society