| Experiment | Measurement [10-8] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $2.06\,^{+0.54}_{-0.53}$ | |||
| PDG | $2.05 \pm0.52$ | pdgLive | ||
| LHCb | ${\cal B}(B^0 \to \pi^+ \pi^- \mu^+ \mu^-) / ( {\cal B}(B^0 \to J/\psi K^*(892)^0) {\cal B}(J/\psi \to \mu^+ \mu^-) {\cal B}(K^*(892)^0 \to K \pi) 2/3 )$ | 0.00 | Phys.Lett.B 743,46 (2015) | The mass windows corresponding to $\phi$ and charmonium resonances decaying to $\mu \mu$ are vetoed. $0.5 < m_{\pi^+\pi^-} < 1.3~\rm{GeV/}c^2$. |
| Source | Parameter | Correlation [%] | Value | $\Delta\chi^2$ |
|---|---|---|---|---|
| fit | ${\cal B}(B_s^0 \to \pi^+ \pi^- \mu^+ \mu^-)$ | 98.4 | $8.4 \pm1.6 \times 10^{-8}$ | |
| fit | ${\cal B}(B^+ \to \pi^+ \mu^+ \mu^-)$ | 95.0 | $1.78 \pm0.23 \times 10^{-8}$ | |
| fit | ${\cal B}(\Lambda_b^0 \to p \pi^- \mu^+ \mu^-)$ | 41.2 | $6.9\,^{+2.7}_{-2.3} \times 10^{-8}$ | |
| fit | ${\cal{B}}( B^+ \to p \overline{\Lambda}(1520))$ | 29.2 | $3.05\,^{+0.84}_{-0.81} \times 10^{-7}$ | |
| fit | ${\cal{B}}(B^+ \to p \overline{p} K^+)$ | 19.6 | $1.062\,^{+0.057}_{-0.056} \times 10^{-5}$ | |
| fit | ${\cal{B}}( B^+ \to p \overline{p} K^+ ),~m_{p\overline{p}}<2.85~\rm{GeV/c^2}$ | 19.5 | $4.37\,^{+0.30}_{-0.29} \times 10^{-6}$ | |
| fit | ${\cal{B}}( B^+ \to p \overline{p} \pi^+ ),~m_{p\overline{p}}<2.85~\rm{GeV/c^2}$ | -0.1 | $10.0 \pm1.1 \times 10^{-7}$ | |
| fit | ${\cal B}(B^+ \to \bar{K}^*(892)^0 K^+)$ | -0.0 | $5.67\,^{+0.67}_{-0.64} \times 10^{-7}$ | |
| fit | ${\cal B}(B^+ \to \phi(1020) \pi^+)$ | -0.0 | $3.1\,^{+1.5}_{-1.4} \times 10^{-8}$ | |
| fit | ${\cal B}(B^+ \to \bar{K}_0^*(1430)^0 K^+)$ | -0.0 | $3.7\,^{+1.3}_{-1.2} \times 10^{-7}$ | |
| fit | ${\cal B}(B^+ \to \rho(1450)^0 \pi^+) \times {\cal B}(\rho(1450)^0 \to K^+ K^-)$ | -0.0 | $1.54 \pm0.11 \times 10^{-6}$ | |
| fit | ${\cal{B}}(B^+ \to K^+ K^- \pi^+)~\pi\pi \leftrightarrow KK~\rm{rescattering}$ | -0.0 | $8.25\,^{+0.78}_{-0.75} \times 10^{-7}$ | |
| fit | ${\cal B}(B^+ \to K^+ K^- \pi^+ \mathrm{(NR)})$ | -0.0 | $1.62\,^{+0.24}_{-0.23} \times 10^{-6}$ | |
| fit | ${\cal B}(B^+ \to f_2(1270) \pi^+) \times {\cal B}(f_2(1270) \to K^+ K^-)$ | -0.0 | $3.77\,^{+0.58}_{-0.56} \times 10^{-7}$ | |
| external | ${\cal B}(B^0 \to J/\psi K^*(892)^0)$ | 99.8 | $1.270 \pm0.050 \times 10^{-3}$ | 0.00 |
| external | ${\cal B}(J/\psi \to \mu^+ \mu^-)$ | 97.0 | $5.961 \pm0.033 \times 10^{-2}$ | 0.00 |
| external | ${\cal B}(B^+ \to J/\psi K^+)$ | 94.6 | $1.020 \pm0.019 \times 10^{-3}$ | 0.00 |
| external | ${\cal B}(\Lambda_b^0 \to J/\psi p \pi^-)$ | 37.5 | $2.61\,^{+0.50}_{-0.40} \times 10^{-5}$ | 0.00 |
| external | ${\cal B}(K^*(892)^0 \to K \pi)$ | 9.9 | $0.99754 \pm0.00021$ | 0.00 |
| external | ${\cal B}(J/\psi \to p \bar{p})$ | -5.5 | $2.120 \pm0.029 \times 10^{-3}$ | 0.00 |
| external | ${\cal B}(\bar{\Lambda(1520)} \to K^+ p)$ | -2.8 | $0.234 \pm0.016$ | 0.00 |
| external | ${\cal B}(B^+ \to J/\psi \pi^+)$ | 0.0 | $3.920 \pm0.080 \times 10^{-5}$ | 0.00 |
| external | ${\cal{B}}(B^+ \to K^+ K^- \pi^+)$ | -0.0 | $5.03 \pm0.25 \times 10^{-6}$ | 0.00 |
| external | ${\cal B}(\phi(1020) \to K^+ K^-)$ | 0.0 | $0.4920 \pm0.0050$ | 0.00 |
| external | ${\cal{B}}(K^*(1430) \to K \pi)$ | 0.0 | $0.930 \pm0.100$ | 0.00 |