Measurement of B(Ds -> munu)

Belle Collaboration, L. Widhalm

We present a measurement of the branching fraction $B(D_s^{+}\to {\mu }^{+}{\nu }_{\mu })$ using a 548 fb${}^{-1}$ data sample collected by the Belle experiment at the KEKB $e^{+}{e}^{-}$ collider. The $D_s$…