On ${\varphi }_3$ Measurements Using $B^{-}\to D^{\ast }{K}^{-}$ Decays

Alex Bondar, Tim Gershon

We point out that in decays of the type $B^{-}\to D^{\ast }{K}^{-}$, where the neutral $D^{\ast }$ meson is an admixture of $D^{\ast 0}$ and ${\bar{D}}^{\ast 0}$, there is an effective strong phase differen…