Exploring $B_s\to D_s^{(\ast )\pm }{K}^{\mp }$ Decays in the Presence of a Sizable Width Difference $\Delta {\Gamma }_s$

Kristof De Bruyn, Robert Fleischer, Robert Knegjens +3

The $B_s\to D_s^{(\ast )\pm }{K}^{\mp }$ decays allow a theoretically clean determination of ${\varphi }_s+\gamma$, where ${\varphi }_s$ is the $B_s^0$-${\bar{B}}_s^0$ mixing phase and $\gamma$ the usual angle of the un…