Abstract
We report a search for decays into invisible final states using a data sample of pairs collected at the resonance with the Belle detector at the KEKB collider. The signal is identified by fully reconstructing a hadronic decay of the accompanying meson and requiring no other particles in the event. No significant signal is observed, and we obtain an upper limit of at the 90% confidence level for the branching fraction of invisible decay.
- Received 26 June 2012
DOI:https://doi.org/10.1103/PhysRevD.86.032002
© 2012 American Physical Society