CP VIOLATION IN H-]T(T)OVER-BAR DECAYS AT E+E- COLLIDERS

被引：16
|
作者：
GRZADKOWSKI, B
机构：
[1] Institute for Theoretical Physics, University of Warsaw, PL-00-681 Warsaw
来源：
PHYSICS LETTERS B | 1994年 / 338卷 / 01期
关键词：
D O I：
10.1016/0370-2693(94)91346-3
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A helicity asymmetry for top quarks originating from Higgs boson decays is investigated within the 2-Higgs Doublet Model. The asymmetry is sensitive to CP violation in the scalar sector of the model, whereas it vanishes in the Standard Model. It has been checked that without any fine tuning of parameters the asymmetry can reach 70%. Standard decay patterns t --> W+b and tBAR --> W- bBAR are utilized as spin analyzers to measure the asymmetry. The Higgs production mechanism considered here is e+e --> Z* --> HZ. It has been shown that signal from the asymmetry can easy overcome the noise for Higgs bosons produced in future linear e+e colliders at energy square-root s = 500 GeV operating with integrated luminosity L = 8.5 x 10(4) pb-1 yr-1.
引用
收藏
页码：71 / 79
页数：9
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