Measurement of $C\!P$ asymmetry in $B_s^0\to D_s^{\mp}K^{\pm}$ decays

Reported are measurements of the time-dependent $C\!P$ violating observables in $B_s^0\to D_s^{\mp}K^{\pm}$ decays using a dataset corresponding to $3.0\,\text{fb}^{-1}$ of $pp$ collisions recorded with the LHCb detector in Run 1 of the LHC. We measure $C_f = 0.735 \pm 0.142 \pm 0.048$, $S_f = -0.518 \pm 0.202 \pm 0.073$, $S_{\bar{f}} = -0.496 \pm 0.197 \pm 0.071$, $D_f = 0.395 \pm 0.277 \pm 0.122$, $D_{\bar{f}} = 0.314 \pm 0.274 \pm 0.107$, where the uncertainties are statistical and systematic, respectively. These observables are used together with a recent measurement of the $B_s^0$ mixing phase $-2\beta_s$ to obtain a measurement of the CKM angle $\gamma$.