A global analysis of ${\bar B}\to DP$ and ${\bar B} \to {\bar D} P$ decays

Recently, a fit to the 15 measured branching ratios of ${\bar B} \to D P$ decays ($B = \{B^+, B^0, B_s^0\}$, $D = \{D^0, D^+, D_s^+\}$, $P \in \{π, K\}$) was performed under the assumption of flavor SU(3) symmetry [SU(3)$_F$]. A terrible fit was found: there was a $> 5σ$ disagreement with the SU(3)$