### Abstract

Abstract: We report a search for B decays to selected final states with the η_{c} meson: B^{±} → K^{±}η_{c}π^{+}π^{−}, B^{±} → K^{±}η_{c}ω, B^{±} → K^{±}η_{c}η and B^{±} → K^{±}η_{c}π^{0}. The analysis is based on 772 × 10^{6}BB¯$$ B\overline{B} $$ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{−} collider. We set 90% confidence level upper limits on the branching fractions of the studied B decay modes, independent of intermediate resonances, in the range (0.6–5.3) × 10^{−4}. We also search for molecular-state candidates in the (Formula presented.) and (Formula presented.) combinations, neutral partners of the Z(3900)^{±} and Z(4020)^{±}, and a poorly understood state X(3915) as possible intermediate states in the decay chain, and set 90% confidence level upper limits on the product of branching fractions to the mentioned intermediate states and decay branching fractions of these states in the range (0.6–6.9) × 10^{−5}.

Original language | English |
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Article number | 132 |

Journal | Journal of High Energy Physics |

Volume | 2015 |

Issue number | 6 |

DOIs | |

Publication status | Published - 2015 Jun 29 |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

_{c}meson.

*Journal of High Energy Physics*,

*2015*(6), [132]. https://doi.org/10.1007/JHEP06(2015)132