### 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 |
---|---|

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 |

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### All Science Journal Classification (ASJC) codes

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

### 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.

}

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

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 59, no. 11, pp. 1-7.

**CP violation in the semileptonic B _{l4} (B→Dπlν) decays : Multi-Higgs-doublet model and scalar-leptoquark models.** / Kim, Choong Sun; Lee, Jake; Namgung, W.

Research output: Contribution to journal › Article

TY - JOUR

T1 - CP violation in the semileptonic Bl4 (B→Dπlν) decays

T2 - Multi-Higgs-doublet model and scalar-leptoquark models

AU - Kim, Choong Sun

AU - Lee, Jake

AU - Namgung, W.

PY - 1999/6/1

Y1 - 1999/6/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=17144412256&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17144412256&partnerID=8YFLogxK

M3 - Article

VL - 59

SP - 1

EP - 7

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 11

ER -

_{l4}(B→Dπlν) decays: Multi-Higgs-doublet model and scalar-leptoquark models. Physical Review D - Particles, Fields, Gravitation and Cosmology. 1999 Jun 1;59(11):1-7.