$B_s\to f_0(980)$ decays: Results from light-cone QCD Sum Rules

We describe a light-cone QCD sum rule calculation of the $B_s\to f_0(980)$ transition form factors useful to predict the branching ratios of the rare decays $B_s\to f_0{\mathrm{\ell }}^{+}{\mathrm{\ell }}^{-}$, $B_s\to f_0\nu \bar{\nu }$ and of $B_s\to J/\psi f_0$decayassumingfactorization\mathrm{.}Wecomparethischannelto$B_s \to J/\psi \phi$asfarasthepossibilitytodeterminethe$B_s$ mixing phase is concerned.