Search for B-s(0) -> eta'Xs(s)over-bar at Belle using a semi-inclusive method

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Date
2021-07-12, 2021-07-12
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AMER PHYSICAL SOC
Abstract

We report the first search for the penguin-dominated process Bs0→η′Xss¯ using a semi-inclusive method. A 121.4 fb-1 integrated luminosity ϒ(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 1.4×10-3 for M(Xss¯)≤2.4 GeV/c2.

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Keywords
Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Particles & Fields, Physics, DECAY, 5107 Particle and High Energy Physics, 49 Mathematical Sciences, 51 Physical Sciences
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