Experiment	Measurement	Reference
LHCb	\([2.2 \pm 0.8\mbox{ (stat)} \pm 0.2\mbox{ (syst)}] \times 10^{-2}\)	LHCb
CMS	\([0.48 \pm 0.05\mbox{ (stat)} \pm 0.04\mbox{ (syst)} \pm 0.05\mbox{ (tau_Bc)}] \times 10^{-2}\)	JHEP 01 (2015) 063
Average	\(\mathbf{[0.50 \pm 0.08\mbox{ (combined)}] \times 10^{-2}}\)