A. Drutskoy
Published 2007-10-08Version 1
We report recent results obtained with the Belle detector using a 23.6 fb^{-1} data sample collected on the Y(5S) resonance at the KEKB asymmetric energy e^+ e^- collider. Inclusive semileptonic B_s^0 -> X^+ l^- \nu decays are studied for the first time and the branching fraction is measured. Combining the electron and muon channels, we obtain Bf(B_s^0 -> X^+ l^- \nu) = (10.2 \pm 0.8 \pm 0.9)%. Also, the radiative penguin decay B_s^0 -> \phi \gamma is observed for the first time, and an improved upper limit for the decay B_s^0 \to \gamma \gamma is obtained.
Comments: Proceedings of the EPS/HEP 2007 Conference, Manchester, England, July 2007 (on behalf of the Belle collaboration), 3 pages, 2 figures
Journal: J.Phys.Conf.Ser.110:052013,2008
Studies of penguin dominated B decays
Observation of B^0 \to D^{*-} τ^+ ν_τ decay at Belle
Observation of the decay $B_s^0\to J/ψη$ and Evidence for $B_s^0\to J/ψη'$
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