Search for the decay Bs0 →ηη
Journal
Physical Review D
Journal Volume
105
Journal Issue
1
Date Issued
2022
Author(s)
Bhuyan, B. et al. (Belle Collaboration)
Abstract
We report results from a search for the decay Bs0→ηη using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We do not observe any signal and set an upper limit on the branching fraction of 14.3×10-5 at 90% confidence level. This result represents a significant improvement over the previous most stringent limit. ? 2022 authors. Published by the American Physical Society.
Type
journal article