Accès ouvert
2008
article
OpenAlex
P. Goldenzweig, A. J. Schwartz, I. Adachi, H. Aihara et autres
We present the results of a study of the charmless vector-vector decay ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{*0}$ with $657\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected with the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider. We measure the branching fraction to be $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{*0})=[1.8\ifmmode\pm\else\textpm\fi{}0.7(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.3(\mathrm{syst})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ with $3.0\ensuremath{\sigma}$ significance. We also perform a …
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Accès ouvert
2004
article
OpenAlex
Yosuke Yusa, T. Nagamine, Akira Yamaguchi, K. Abe et autres
We have searched for neutrinoless τ lepton decays into three charged leptons using an 87.1 fb −1 data sample collected with the Belle detector at the KEKB e + e − collider. Since the number of signal candidate events is compatible with …
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Accès ouvert
2002
article
OpenAlex
R.-S. Lu, K. Abe, Riichiro Abe, I. Adachi et autres
We report the first observation of the charmless two-body mode ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{\ifmmode\pm\else\textpm\fi{}}$ decay, and a new measurement of the branching fraction for the ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ decay. The measured branching fractions are $\mathcal{B}({B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{\ifmmode\pm\else\textpm\fi{}})=({9.2}_{\ensuremath{-}2.3}^{+2.6}\ifmmode\pm\else\textpm\fi{}1.0)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $\mathcal{B}({B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}})=({4.2}_{\ensuremath{-}1.8}^{+2.0}\ifmmode\pm\else\textpm\fi{}0.5)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. We also measure the partial rate asymmetry of ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{\ifmmode\pm\else\textpm\fi{}}$ decays …
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