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Physical review（2023）
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摘要
We present a study of rare decay modes B+→Ds+h0, B+→Ds*+h0, and B+→D+h0, where h0 denotes the neutral meson η or K0, using a data sample of (772±10)×106 BB¯ events produced at the ϒ(4S) resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We find no evidence for these decays, so we set upper limits at the 90% confidence level on the branching fractions of B+→Ds+h0, Ds*+h0, and D+h0 decay modes. Along with these rare decay modes, we report improved measurements of the color-suppressed decay branching fractions B(B¯0→D0η)=(26.6±1.2±2.1)×10−5 and B(B¯0→D0K¯0)=(5.6±0.5±0.2)×10−5. The first and second quoted uncertainties are statistical and systematic, respectively.Received 1 September 2022Accepted 17 January 2023DOI:https://doi.org/10.1103/PhysRevD.107.L031101Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Particles & Fields
