PRL 109, 131801 (2012)
LHCb:
INSPIRE
Parameter
Measurement
\(\frac{ {\cal{B}} ( \bar{B}^{0} \to \bar{D}^{0} K^{-} K^{+} )} {{\cal{B}} ( \bar{B}^{0} \to \bar{D}^{0} \pi^{-} \pi^{+} )}\)
\([0.056 \pm 0.110\mbox{ (stat)} \pm 0.007\mbox{ (syst)}]\)