We report on a study of the decay (Formula presented) 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 (Formula presented) events. An effective form factor was determined from the observed distribution of the (Formula presented) invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be (Formula presented).
|Original language||English (US)|
|Number of pages||1|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - 2001|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)