Bound on R-parity violating couplings from nonleptonic B decay
  The effective Hamiltonian for the R-parity violating couplings induced nonleptonic decay $B^-\to K^-K^0$ is calculated including leading log QCD corrections running from $m_{\tilde q}$, the mass of the up-type squark, to $m_b$. Experimental upper limit of this decay is used to give the bound on the R-parity violating couplings $\lambda''$. 
Cai-Dian Lu and Da-Xin Zhang