ENHANCEMENT OF CP-VIOLATING PHENOMENA AT TREE LEVEL DUE TO HEAVY QUARK PROPAGATOR SINGULARITIES

被引：33

作者：

PILAFTSIS, A

机构：

[1] Institut für Physik, Universität Dortmund, Dortmund 50

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1990年 / 47卷 / 01期

关键词：

D O I：

10.1007/BF01551918

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：

We discuss new interesting CP-violating phenomena in scattering processes resulting from heavy quarks with masses larger than the W-mass (mq>MW). Such a situation is connected with a singularity in the heavy quark propagator which, properly regularized, gives rise to measurable CP-odd effects. The observability of these CP-odd signals in the most representative Kobayashi-Maskawa (KM) models (like fourth generation model, left-right symmetric model and two Higgs doublet model) is investigated. We find that the necessary conditions for measurable CP-asymmetries imply the enlargement of the Standard Model (SM) in the generations of quarks. In addition a significant mixing between the fourth and the other generations is required. © 1990 Springer-Verlag.

引用

页码：95 / 103

页数：9

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