$\frac{{\cal{B}}( B^{0}_{s} \to \pi^+ \pi^- \mu^+ \mu^-)}{{\cal{B}}( B^{0} \to J/\psi K^{0} ) \times {\cal{B}}( J/\psi \to \mu^+ \mu^- ) \times {\cal{B}}( K^{0} \to K^+ \pi^- )}$

Experiment	Measurement [10^-3]	$\Delta\chi^2$	Reference	Comments
Average	$1.67 \pm0.32$
LHCb	$1.67 \pm0.29 \pm0.13$	0.00	Phys.Lett.B 743,46 (2015)	$0.5 < m_{\pi^+\pi^-} < 1.3~\rm{GeV/}c^2$.

$\frac{{\cal{B}}( B^{0}_{s} \to \pi^+ \pi^- \mu^+ \mu^-)}{{\cal{B}}( B^{0} \to J/\psi K^{*0} ) \times {\cal{B}}( J/\psi \to \mu^+ \mu^- ) \times {\cal{B}}( K^{*0} \to K^+ \pi^- )}$