Letter
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Search for rare decays $B^{+} \to D_{s}^{() +} η$ , $D_{s}^{() +} {\bar{K}}^{0}$ , $D^{+} η$ , and $D^{+} K^{0}$

M. Kumar , V. Bhardwaj , K. Lalwani , I. Adachi , H. Aihara , D. M. Asner , T. Aushev , V. Babu , P. Behera et al. (The Belle Collaboration)

P. Behera , K. Belous , J. Bennett , M. Bessner , B. Bhuyan , T. Bilka , A. Bobrov , D. Bodrov , G. Bonvicini , J. Borah , A. Bozek , M. Bračko , P. Branchini , T. E. Browder , A. Budano , M. Campajola , D. Červenkov , M.-C. Chang , P. Chang , B. G. Cheon , K. Chilikin , H. E. Cho , K. Cho , S.-J. Cho , S.-K. Choi , Y. Choi , S. Choudhury , D. Cinabro , S. Das , N. Dash , G. De Pietro , R. Dhamija , F. Di Capua , J. Dingfelder , Z. Doležal , T. V. Dong , D. Dossett , D. Epifanov , D. Ferlewicz , B. G. Fulsom , R. Garg , V. Gaur , A. Garmash , A. Giri , P. Goldenzweig , E. Graziani , T. Gu , Y. Guan , K. Gudkova , C. Hadjivasiliou , T. Hara , K. Hayasaka , H. Hayashii , W.-S. Hou , C.-L. Hsu , T. Iijima , K. Inami , N. Ipsita , A. Ishikawa , R. Itoh , M. Iwasaki , W. W. Jacobs , E.-J. Jang , Q. P. Ji , S. Jia , Y. Jin , K. K. Joo , D. Kalita , K. H. Kang , C. Kiesling , C. H. Kim , D. Y. Kim , K.-H. Kim , Y.-K. Kim , K. Kinoshita , P. Kodyš , A. Korobov , S. Korpar , E. Kovalenko , P. Križan , P. Krokovny , R. Kumar , K. Kumara , Y.-J. Kwon , T. Lam , J. S. Lange , M. Laurenza , S. C. Lee , C. H. Li , J. Li , L. K. Li , Y. Li , Y. B. Li , L. Li Gioi , J. Libby , K. Lieret , D. Liventsev , M. Masuda , T. Matsuda , D. Matvienko , S. K. Maurya , F. Meier , M. Merola , F. Metzner , K. Miyabayashi , R. Mizuk , G. B. Mohanty , M. Mrvar , I. Nakamura , M. Nakao , Z. Natkaniec , A. Natochii , L. Nayak , M. Nayak , N. K. Nisar , S. Nishida , S. Ogawa , H. Ono , P. Oskin , P. Pakhlov , G. Pakhlova , S. Pardi , H. Park , S.-H. Park , A. Passeri , S. Patra , S. Paul , T. K. Pedlar , R. Pestotnik , L. E. Piilonen , T. Podobnik , E. Prencipe , M. T. Prim , M. V. Purohit , N. Rout , G. Russo , S. Sandilya , A. Sangal , L. Santelj , V. Savinov , G. Schnell , J. Schueler , C. Schwanda , Y. Seino , K. Senyo , M. E. Sevior , M. Shapkin , C. Sharma , C. P. Shen , J.-G. Shiu , J. B. Singh , E. Solovieva , M. Starič , Z. S. Stottler , J. F. Strube , M. Sumihama , T. Sumiyoshi , M. Takizawa , U. Tamponi , K. Tanida , F. Tenchini , K. Trabelsi , T. Tsuboyama , M. Uchida , Y. Unno , S. Uno , R. van Tonder , G. Varner , K. E. Varvell , A. Vinokurova , E. Waheed , E. Wang , M.-Z. Wang , X. L. Wang , M. Watanabe , S. Watanuki , O. Werbycka , J. Wiechczynski , E. Won , B. D. Yabsley , W. Yan , S. B. Yang , J. Yelton , J. H. Yin , C. Z. Yuan , Y. Yusa , Y. Zhai , Z. P. Zhang , V. Zhilich , and V. Zhukova (The Belle Collaboration)

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Phys. Rev. D 107, L031101 – Published 16 February, 2023

DOI: https://doi.org/10.1103/PhysRevD.107.L031101

Abstract

We present a study of rare decay modes $B^{+} \to D_{s}^{+} h^{0}$ , $B^{+} \to D_{s}^{* +} h^{0}$ , and $B^{+} \to D^{+} h^{0}$ , where $h^{0}$ denotes the neutral meson $η$ or $K^{0}$ , using a data sample of $(772 \pm 10) \times 10^{6} B \bar{B}$ events produced at the $ϒ (4 S)$ 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 $B^{+} \to D_{s}^{+} h^{0}$ , $D_{s}^{* +} h^{0}$ , and $D^{+} h^{0}$ decay modes. Along with these rare decay modes, we report improved measurements of the color-suppressed decay branching fractions $B ({\bar{B}}^{0} \to D^{0} η) = (26.6 \pm 1.2 \pm 2.1) \times 10^{- 5}$ and $B ({\bar{B}}^{0} \to D^{0} {\bar{K}}^{0}) = (5.6 \pm 0.5 \pm 0.2) \times 10^{- 5}$ . The first and second quoted uncertainties are statistical and systematic, respectively.

Physics Subject Headings (PhySH)

Cabibbo–Kobayashi–Maskawa matrix

Article Text

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Phys. Rev. D 107, L031101– Published 16 February, 2023

Vol. 107, Iss. 3 — 1 February 2023

Received 1 September 2022
Accepted 17 January 2023

DOI: https://doi.org/10.1103/PhysRevD.107.L031101

Published 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 Society

Physical Review D

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Search for rare decays $B^{+} \to D_{s}^{() +} η$ , $D_{s}^{() +} {\bar{K}}^{0}$ , $D^{+} η$ , and $D^{+} K^{0}$

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Search for rare decays B+→Ds(*)+η, Ds(*)+K¯0, D+η, and D+K0

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Search for rare decays $B^{+} \to D_{s}^{() +} η$ , $D_{s}^{() +} {\bar{K}}^{0}$ , $D^{+} η$ , and $D^{+} K^{0}$