Searching for New Physics inb→ssd¯Decays

For any new physics possibly emerging in the future $B$ experiments, the problem is how to extract the signals from the standard model (SM) background. We consider the decay $b\to \mathrm{ss}\overline{d}$ which is very small in the SM. In the minimal supersymmetric SM this decay is possibly accessible in the future experiments. In supersymmetric models with $R$-parity violating couplings, this channel is not strictly constrained and thus is useful in obtaining bounds on the lepton-number violating couplings. A typical candidate for the suggested search is the $B^{-}\to K^{-}{K}^{-}{\pi }^{+}$ mode.