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

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 data set collected by the Belle experiment, at the KEKB asymmetric-energy 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 10 $^{-3}$ for $M(X_{sbar{s}})$ 2.4 GeV/ $c^{2}$ .

Language	:	English
Journal	:	Physical Review D
Volume	:	104
Number	:	1
Pages	:	p.012007_1 - 012007_11
Publication Year/Month	:	2021/07
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Paper URL	:	https://doi.org/10.1103/PhysRevD.104.012007
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Keywords	:	no keyword
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Article of JAEA R&D Review	:
Cooperating Institute	:	高エネルギー加速器研究機構

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Registration No. : AA20220419
JAEA Abstracts No. : 50000993
Paper Submission No. : 25740

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Search for at Belle using a semi-inclusive method

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