CP violation in t->W(+)b decays in two-Higgs doublet model

被引：6
|
作者：
Hasuike, T
Hattori, T
Hayashi, T
Wakaizumi, S
机构：
[1] UNIV TOKUSHIMA,INST THEORET PHYS,TOKUSHIMA 770,JAPAN
[2] KAGAWA UNIV,DEPT PHYS,TAKAMATSU,KAGAWA 760,JAPAN
[3] UNIV TOKUSHIMA,SCH MED SCI,TOKUSHIMA 770,JAPAN
来源：
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1997年 / 76卷 / 01期
关键词：
D O I：
10.1007/s002880050536
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Due to the large mass of top quark, CP violation in the top-quark decay is sensitive to the interactions mediated by Higgs bosons. We consider CP violation in t --> W(+)b decay by calculating consistently in unitary gauge the CP-violating up-down asymmetry of the leptons from W boson decays in t --> W(+)b, defined by Grzadkowski and Gunion, in the two-Higgs doublet model with CP-violating neutral sector. The asymmetry is shown to be at most of the order of (1 - 4) x 10(-3) for tan beta = 1.0, where tan beta is the ratio of vacuum expectation values for the two neutral Higgs bosons.
引用
收藏
页码：127 / 132
页数：6
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