Studying double charm decays ofBu,dandBsmesons in the MSSM withR-parity violation

Abstract

Motivated by the possible large direct CP asymmetry of B{sub d}{sup 0}{yields}D{sup +}D{sup -} decays measured by the Belle Collaboration, we investigate double charm B{sub u,d} and B{sub s} decays in the minimal supersymmetric standard model with R-parity violation. We derive the bounds on relevant R-parity violating couplings from the current experimental data, which show quite consistent measurements among relative collaborations. Using the constrained parameter spaces, we explore R-parity violating effects on other observables in these decays, which have not been measured or have not been well measured yet. We find that the R-parity violating effects on the mixing-induced CP asymmetries of B{sub d}{sup 0}{yields}D{sup (}*{sup )+}D{sup (}*{sup )-} and B{sub s}{sup 0}{yields}D{sub s}{sup (}*{sup )+}D{sub s}{sup (}*{sup )-} decays could be very large; nevertheless, the R-parity violating effects on the direct CP asymmetries could not be large enough to explain the large direct CP violation of B{sub d}{sup 0}{yields}D{sup +}D{sup -} from Belle. Our results could be used to probe R-parity violating effects and will correlate with searches for direct R-parity violating signals in future experiments.