Measurement of branching fraction and search for CP violation in B→ϕϕK
Measurement of branching fraction and search for CP violation in B→ϕϕK
We report the measurement of branching fractions and $CP$-violation asymmetries in $B\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\phi}K$ decays based on a $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample containing $772\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }B\overline{B}$ events. The data were recorded at the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. For ${B}^{+}\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\phi}{K}^{+}$, the branching fraction and …