Experiment	Measurement	Reference
LHCb	\([2.2 \pm 0.8\mbox{ (stat)} \pm 0.2\mbox{ (syst)}] \times 10^{-2}\)	LHCb
CMS	\([0.48 \pm 0.05\mbox{ (stat)} \pm 0.04\mbox{ (syst)} ^{+0.05}_{-0.03}\mbox{ (tau_Bc)}] \times 10^{-2}\)	CMS-PAS-BPH-12-011
Average	\(\mathbf{[0.49 \pm 0.08\mbox{ (combined)}] \times 10^{-2}}\)