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Search for the decay $$B_s^0rightarrowetaeta$$

Bhuyan, B.*; 谷田 聖   ; Belle Collaboration*; 他185名*

Bhuyan, B.*; Tanida, Kiyoshi; Belle Collaboration*; 185 of others*

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

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パーセンタイル:9.01

分野:Astronomy & Astrophysics

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