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Motivated by the possible large direct CP asymmetry of \bar{B}^0_d \to D^+D^- decay measured by Belle collaboration, we investigate double charm B_{u,d}and B_s decays in the minimal supersymmetric standard model with R-parityviolation. We derive the bounds on relevant R-parity violating couplings fromthe current experimental data, which show quite consistent measurements amongrelative collaborations. Using the constrained parameter spaces, we exploreR-parity violating effects on other observables in these decays, which have notbeen measured or have not been well measured yet. We find that the R-parityviolating effects on the mixing-induced CP asymmetries of \bar{B}^0_d \toD^{(*)+} D^{(*)-} and \bar{B}^0_s \to D^{(*)+}_s D^{(*)-}_s decays could bevery large, nevertheless the R-parity violating effects on the direct CPasymmetries could not be large enough to explain the large direct CP violationof \bar{B}^0_d \to D^{+} D^{-} from Belle. Our results could be used to probeR-parity violating effects and will correlate with searches for direct R-parityviolating signals in future experiments.

Studying Double Charm Decays of B_{u,d} and B_{s} Mesons in the MSSM with R-parity Violation