### Abstract

CP violation from physics beyond the standard model is investigated in B_{l4} decays: B→Dπlν̄_{l}. 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 B_{τ4} decays the optimal asymmetry is sizable and can be detected at 1σ level with about 10^{6}-10^{7}B-meson pairs, for maximally allowed values of CP-odd parameters in those extended models.

Original language | English |
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Pages (from-to) | 1-7 |

Number of pages | 7 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 59 |

Issue number | 11 |

Publication status | Published - 1999 Jun 1 |

### All Science Journal Classification (ASJC) codes

- Mathematical Physics
- Physics and Astronomy(all)
- Nuclear and High Energy Physics

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## Cite this

_{l4}(B→Dπlν) decays: Multi-Higgs-doublet model and scalar-leptoquark models.

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*59*(11), 1-7.