| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | \([8.37 \pm 1.95\mbox{ (stat)} ^{+0.71}_{-0.66}\mbox{ (syst)} \pm 0.35\mbox{ (f_1(1295) Branching ratio)}] \times 10^{-6}\) | PRL 112 (2014) 091802 |
| Average | \(\mathbf{[8.37 ^{+2.10}_{-2.09}\mbox{ (combined)}] \times 10^{-6}}\) |