Experiment	Measurement	Reference
LHCb	\([7.31 \pm 0.19\mbox{ (stat)} \pm 0.22\mbox{ (syst)} \pm 0.39\mbox{ (norm)}] \times 10^{-5}\)	Phys. Rev. D 91, 092002 (2015)
Average	\(\mathbf{[7.31 \pm 0.49\mbox{ (combined)}] \times 10^{-5}}\)