Rare B-meson decays in supersymmetry

Summary

The weak processes$B \to K\ell \bar \ell , B \to H*\ell \bar \ell \left( {\ell = e or \mu } \right), B \to K\nu \bar \nu and B \to K*\nu \bar \nu$ are studied in the framework of the supersymmetric theory (SUSY). It is shown that the branching ratio (BR) for$B \to K\ell \bar \ell$ decay is in the order of 10⁻⁶ and it is∼10⁻⁵÷10⁻⁶ for$B \to K*\ell \bar \ell$. It is found that there are mass regions where the contribution of the SUSY particles to the decay rate exceeds that of the SM. Using the existing experimental upper bound to BR restrictions on the masses of the SUSY particles$\bar m_g$ andm _3/2 are obtained.