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arXiv 1105.6095hep-phhep-ex
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具有第四代费米子的两个Higgs二重态--TeV-scale复合模型

Two Higgs doublets with 4th generation fermions - models for TeV-scale compositeness

Shaouly Bar-Shalom, Soumitra Nandi, Amarjit Soni

摘要:

我们构造了一类含有第四代连续费米子的双Higgs二重态模型,它可以有效地适应由第四族费米子凝聚体触发的动力学电弱对称性破缺的低能特征和现象学.特别地,我们通过将具有更大VEV的“较重的”Higgs二重态(Φ_h)仅耦合到重夸克,而将“较轻的”Higgs二重态(Φ_l)仅耦合到轻费米子,从而将重夸克分离出来。我们研究这些模型的约束条件,从精密电弱数据,以及从风味数据。我们还讨论了一些不同的新功能,有直接的后果的生产和衰变的第四家庭的夸克和轻子在高能对撞机,特别是传统的搜索策略的t'和b'可能需要显着修改。

英文摘要:

We construct a class of two Higgs doublets models with a 4th sequential generation of fermions that may effectively accommodate the low energy characteristics and phenomenology of a dynamical electroweak symmetry breaking scenario which is triggered by the condensates of the 4th family fermions. In particular, we single out the heavy quarks by coupling the "heavier" Higgs doublet (Φ_h) which possesses a much larger VEV only to them while the "lighter" doublet (Φ_l) couples only to the light fermions. We study the constraints on these models from precision electroweak data as well as from flavor data. We also discuss some distinct new features that have direct consequences on the production and decays of the 4th family quarks and leptons in high energy colliders; in particular the conventional search strategies for t' and b' may need to be significantly revised.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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