CP violation in the semileptonic top decay in two-Higgs doublet model

Tsutom Hasuike; Toshihiko Hattori; Seiichi Wakaizumi

doi:10.1103/PhysRevD.58.095008

CP violation in the semileptonic top decay in two-Higgs doublet model

High Energy Physics - Phenomenology 2009-10-31 v2

Authors: Tsutom Hasuike , Toshihiko Hattori , Seiichi Wakaizumi

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Abstract

CP violation in semileptonic top-quark decay is investigated by exactly using one charged- and three neutral-Higgs bosons obtained by solving the Higgs mass matrix in two-Higgs doublet model. The CP-violating up-down asymmetry of leptons from $W$ boson decays is shown to be $1 \times 10^{-4} - 4 \times 10^{-3}$ for the region of ${\rm tan} \beta \ll 1$ , where ${\rm tan} \beta$ is the ratio of vacuum expectation values for the two neutral Higgs bosons.

Keywords

CP violation top quark decay two-Higgs doublet model semileptonic decay Higgs bosons

Cite

@article{arxiv.hep-ph/9911526,
  title  = {CP violation in the semileptonic top decay in two-Higgs doublet model},
  author = {Tsutom Hasuike and Toshihiko Hattori and Seiichi Wakaizumi},
  journal= {arXiv preprint arXiv:hep-ph/9911526},
  year   = {2009}
}

Comments

9 pages in LaTeX. 1 figure drawn in LaTeX and 8 eps figures. Improvements of the figures

CP violation in the semileptonic top decay in two-Higgs doublet model

Abstract

Keywords

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