On composite two Higgs doublet models

被引：37

作者：

Bertuzzo, Enrico ^{[1
]}

Ray, Tirtha Sankar ^{[1
]}

de Sandes, Hiroshi ^{[1
]}

Savoy, Carlos A. ^{[1
]}

机构：

[1] CEA Saclay, Inst Phys Theor, F-91191 Gif Sur Yvette, France

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 05期

关键词：

Higgs Physics; Beyond Standard Model; Technicolor and Composite Models; SYMMETRY; BREAKING;

D O I：

10.1007/JHEP05(2013)153

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 investigate the issue of anomalous contribution to the T parameter and to Flavor Changing Neutral Currents in models with two Higgs doublets arising as composite pseudo Nambu-Coldstone modes. The non linear Lagrangians of several models are explicitly derived and the anomalous contributions to T are identified. The breaking patterns SU(5) -> SU(4) x U(1) and SU(5) -> SU(4), are analyzed first and we show how anomalous contributions to T arise in both models. Apart front that, the embedding of the Standard Model fermions in a 10 of SU(5) avoids at the same time large corrections to the Zb (b) over bar coupling and Flavor Changing Neutral Current transitions. Finally, we propose a model based on the breaking SO(9)/SO(8) that is free from anomalous contributions to T and in which the problems of the Zb (b) over bar coupling and of Flavor Changing Neutral Currents can be simultaneously solved.

引用

页数：23

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