arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2203.01396hep-phhep-ex
收藏

额外的希格斯二重态

Good things to do with extra Higgs doublets

Hooman Davoudiasl, Ian M. Lewis, Matthew Sullivan

摘要:

在对Snowmass 2021进程的贡献中,我们概述了具有两个或三个希格斯双重态的模型,这些模型解决了粒子物理学和宇宙学的开放问题。特别是,我们表明,有两个额外的希格斯二重态可以提供一种机制,轻子不对称性的产生,因此重子不对称性,通过CP违反希格斯衰变,弱标度温度附近。在另一个模型中,只有一个额外的希格斯二重态,我们说明,汤川耦合夸克和中微子可以导致一个可行的机制产生狄拉克中微子质量,来源于QCD手征凝聚的奇异夸克。我们适应自发的味道违规-耦合轻费米子新的希格斯二重态的框架,同时避免树水平的味道改变中性电流-在构建这些模型。在这两种情况下,风味数据都对参数空间提供了有趣的约束。这两种情况都包括轻夸克与希格斯双重态的$\mathcal{O}{(1)}$耦合,这使得未来100 TeV的$pp$对撞机能够通过共振单产生达到$\mathcal{O}{(10~{\rm TeV})}$质量的新标量。在中微子质量模型中,对撞机的数据可以揭示中微子的质量等级。这篇文章是基于在参考文献中提出的工作。[1,2]。

英文摘要:

In this contribution to the Snowmass 2021 process, we outline models with two or three Higgs doublets that address open questions of particle physics and cosmology. In particular, we show that with two additional Higgs doublets one can provide a mechanism for the generation of lepton asymmetry and hence baryon asymmetry, through CP violating Higgs decays, near weak scale temperatures. In another model with only one extra Higgs doublet, we illustrate that Yukawa couplings to quarks and neutrinos can lead to a viable mechanism for the generation of Dirac neutrino masses, sourced by the QCD chiral condensate of strange quarks. We adapt Spontaneous Flavor Violation -- a framework for coupling light fermions to new Higgs doublets while avoiding tree level flavor-changing neutral currents -- in constructing these models. In both cases, flavor data provide interesting constraints on the parameter space. Either scenario includes $\mathcal{O}{(1)}$ couplings of light quarks to the Higgs doublets which allow a future 100 TeV $pp$ collider to have reach for the new scalars up to $\mathcal{O}{(10~{\rm TeV})}$ masses, through resonant single production. In the neutrino mass model, collider data can shed light on the mass hierarchy of neutrinos. This article is based on work presented in Refs. [1,2].

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。

↑