Abstract
We search for annihilation decay modes of neutral mesons into pairs of charmless charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to of integrated luminosity, we obtain the first evidence for the decay, with a significance of , and a measured branching ratio . A search for the mode in the same sample yields a significance of , and a central value estimate .
- Received 1 November 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.211803
© 2012 American Physical Society