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

Multi-Higgs-doublet model and scalar-leptoquark models

Choong Sun Kim, Jake Lee, W. Namgung

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume59
Issue number11
Publication statusPublished - 1999 Jun 1

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CP Violation
CP violation
Higgs
Scalar
Decay
scalars
Asymmetry
asymmetry
decay
Standard Model
Odd
Excited States
Mesons
hadrons
Model
Fermions
leptons
mesons
fermions
Physics

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "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.",
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