Measurements of B Decays to Two Kaons

K. Abe et al. (Belle Collaboration)
Phys. Rev. Lett. 95, 231802 – Published 2 December 2005

Abstract

We report measurements of B meson decays to two kaons using 253fb1 of data collected with the Belle detector at the KEKB energy-asymmetric e+e collider. We find evidence for signals in B+K¯0K+ and B0K0K¯0 with significances of 3.0σ and 3.5σ, respectively. (Charge-conjugate modes are included.) The corresponding branching fractions are measured to be B(B+K¯0K+)=(1.0±0.4±0.1)×106 and B(B0K0K¯0)=(0.8±0.3±0.1)×106. These decay modes are examples of hadronic bd transitions. No signal is observed in the decay B0K+K, and we set an upper limit of 3.7×107 at 90% confidence level.

  • Figure
  • Received 20 July 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.231802

©2005 American Physical Society

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Vol. 95, Iss. 23 — 2 December 2005

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