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

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

1999-11-30

arxiv.org/abs/hep-ph/9911526v2

Phys.Rev. D58 (1998) 095008

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.58.095008

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.

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