Measurement of the CKM angle $γ$ with $ B^\pm \to D[K^\mp π^\pm π^\pm π^\mp] h^\pm$ decays using a binned phase-space approach
The CKM angle $γ$ is determined from $C\!P$-violating observables measured in ${B^\pm \to D[ K^\mp π^\pmπ^\pmπ^\mp] h^\pm}$, $(h = K,π)$ decays, where the measurements are performed in bins of the decay phase-space of the $D$ meson. Using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of $7, 8$ and $13\,\text{TeV}$, corresponding to a total integrated luminosity of $9\,\text{fb}^{-1}$, $γ$ is determined to be \begin{equation*} γ= \left( 54.8 \: ^{+\:6.0 }_{-\:5.8} \: ^{+\:0.6}_{-\:0.6} \: ^{+\:6.7}_{-\:4.3} \right)^\circ, \end{equation*} where the first uncertainty is statistical, the second systematic and the third from the external inputs on the coherence factors and strong phases of the $D$-meson decays.