| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | \([7.14 \pm 0.99\mbox{ (stat)} ^{+0.83}_{-0.91}\mbox{ (syst)} \pm 0.41\mbox{ (f_1(1295) Branching ratio)}] \times 10^{-5}\) | PRL 112 (2014) 091802 |
| Average | \(\mathbf{[7.14 ^{+1.36}_{-1.41}\mbox{ (combined)}] \times 10^{-5}}\) |