Abstract
We search for decays of the type (where or ) in of collisions collected at the Tevatron by the upgraded Collider Detector at Fermilab. We report the first observation of the new mode with a yield of events, corresponding to , where is the ratio of production fractions of and . We find results in agreement with world averages for the modes, and set the following new limits at 90% C.L.: and .
- Received 7 July 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.211802
©2006 American Physical Society