Higgs propagator in the presence of strong dynamics in the electroweak sector

被引：0
作者：
Desai, BR [1 ]
Vaucher, AR [1 ]
机构：
[1] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA
来源：
MODERN PHYSICS LETTERS A | 2000年 / 15卷 / 24期
关键词：
D O I：
10.1142/S0217732300001766
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Higgs propagator, in the presence of strong top-Yukawa coupling, is expressed in the form of dispersion integrals so that unitarity in top-antitop scattering amplitude is maintained. It is found that a large top-Yukawa coupling lowers the Higgs mass from the condensate-model value of twice the top mass (approximate to 350 GeV) to 100-200 GeV consistent with the Z(0) width precision measurements. The coupling is found to be approximate to 3.7 at the top mass, much larger than the Standard Model value approximate to 1. It corresponds to a compositeness scale approximate to 1.4 TeV, which is consistent with top-color models. A second scalar state around 1 TeV also emerges as a solution in combination with the low mass Higgs.
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页码：1483 / 1490
页数：8
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