CP violation from physics beyond the standard model is investigated in Bl4 decays: B→Dπlν̄l. In the decay process, we include various excited states as intermediate states decaying to the final hadrons, D+π. We consider the semileptonic decay to a tau lepton family as well. CP violation is implemented through complex scalar-fermion couplings in the multi-Higgs-doublet model and scalar-leptoquark models beyond the standard model. With these complex couplings, we calculate the CP-odd rate asymmetry and the optimal asymmetry. We find that for Bτ4 decays the optimal asymmetry is sizable and can be detected at 1σ level with about 106-107B-meson pairs, for maximally allowed values of CP-odd parameters in those extended models.
|Number of pages||7|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 1999 Jun 1|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)