| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | \([7.85 \pm 1.09\mbox{ (stat)} ^{+0.76}_{-0.90}\mbox{ (syst)} \pm 0.46\mbox{ (f_1(1295) Branching ratio)}] \times 10^{-6}\) | PRL 112 (2014) 091802 |
| Average | \(\mathbf{[7.85 ^{+1.41}_{-1.49}\mbox{ (combined)}] \times 10^{-6}}\) |