Search for the decay $B_s^0\to \eta \eta$

Abstract

We report results from a search for the decay $B_s^0\to \eta \eta$ using 121.4 fb${}^{-1}$ of data collected at the ${\rm Y}(5S)$ 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 $14.3\times 10^{-5}$ at $90\%$ confidence level. This result represents a significant improvement over the previous most stringent limit.

arXiv comment7 pages, 6 figures

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Cited by in corpus (1)

• Anomalies in Hadronic $B$ Decays: an Update