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

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

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...

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Veröffentlicht in:arXiv.org 1999-12
Hauptverfasser: Hasuike, Tsutom, Hattori, Toshihiko, Wakaizumi, Seiichi
Format: Artikel
Sprache:eng
Schlagworte:
Bosons
CP violation
Decay
Higgs bosons
Leptons
Mass matrix
Matter & antimatter
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Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.9911526