Motivated by the possible large direct CP asymmetry of B̄d 0→D+D- decays measured by the Belle Collaboration, we investigate double charm Bu,d and Bs 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 B̄d0→D(*)+D(*)- and B̄s0→Ds(*)+Ds(*)- 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 B̄d 0→D+D- 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.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 2009 Mar 2|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)