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：

TOP-QUARK PRODUCTION; ELECTRIC-DIPOLE MOMENT; PAIR PRODUCTION; WEINBERG MODEL; (P)OVER-BAR-P COLLISIONS; BOSON-EXCHANGE; NONCONSERVATION; POLARIZATION; COLLIDER; MASS;

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

页码：127 / 132

页数：6

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