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Search for $$B_{s}^{0} rightarrow eta^{prime} X_{sbar{s}}$$ at Belle using a semi-inclusive method

Belleにおけるセミインクルーシブ法による$$B_{s}^{0} rightarrow eta^{prime} X_{sbar{s}}$$崩壊の探索

Dubey, S.*; 谷田 聖   ; Belle Collaboration*; 他171名*

Dubey, S.*; Tanida, Kiyoshi; Belle Collaboration*; 171 of others*

We report the first search for the penguin-dominated process $$B_{s}^{0} rightarrow eta^{prime} X_{sbar{s}}$$ using a semi-inclusive method. A 121.4 $$mathrm{fb}^{-1}$$ integrated luminosity $$Upsilon(5S)$$ data set collected by the Belle experiment, at the KEKB asymmetric-energy $$e^+e^-$$ collider, is used. We observe no statistically significant signal and including all uncertainties, we set a 90% confidence level upper limit on the partial branching fraction at 1.4 $$times$$ 10$$^{-3}$$ for $$M(X_{sbar{s}})$$ $$leq$$ 2.4 GeV/$$c^{2}$$.

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パーセンタイル:10.04

分野:Astronomy & Astrophysics

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