Phys.Rev. D84 (2011) 052004

Parameter	Measurement
\({{\cal{B}} ( B^{-} \to K^{-} X(3872) )\times {\cal{B}} ( X(3872) \to J/\psi \pi^{+} \pi^{-} )}\)	\([8.61 \pm 0.62\mbox{ (stat)} \pm 0.52\mbox{ (syst)}] \times 10^{-6}\)