arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.12069hep-ph
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一个利用改进的Higgs机制产生中微子质量的方案

A scheme for neutrino mass generation through modified Higgs mechanism

Yanbin Deng, Changyu Huang, Yong-Chang Huang

摘要:

我们提出了一种新的中微子质量产生方法,通过修改希格斯机制,通过引入额外的微小真空破缺带电希格斯场。在与标准电弱模型完全相同的粒子谱下,这种改进的Higgs机制赋予轻子-Higgs Yukawa耦合拉格朗日量一个改进的轻子质量矩阵。将粒子实验的最新数据插入到这个修改的轻子质量矩阵中,使我们能够确定新引入的参数的值,该参数用于描述额外微扰的Higgs真空破缺,并产生三代中微子的质量。我们得出三代中微子质量的总和为:$Σ_{(ν)} ~ m_ν \approx 0.104078 ~eV$。最新的宇宙学观测结果,即95 ° C.由普朗克数据确定的上限$Σ_{(ν)} ~ m_ν < 0.176 ~eV$。在我们提出的修正的Higgs机制中,Higgs真空破缺两次,因此,额外Higgs真空破缺的微小性解释了中微子质量微小性的起源,而标准Higgs真空破缺的相对较大性被认为是带电轻子质量相对较大性的起源。这一方案除了能解决大质量中微子问题外,还能为粒子物理中与希格斯玻色子相关的问题带来丰富的新物理。

英文摘要:

We propose a new method for neutrino mass generation through a modified Higgs mechanism by introducing an additional tiny vacuum breaking to the charged Higgs field. With identical particle spectrum as standard electroweak model, this modified Higgs mechanism endows the lepton-Higgs Yukawa coupling Lagrangian with a modified lepton mass matrix. Inserting the latest data of particle experiments into this modified lepton mass matrix enable us to locate the value of the newly introduced parameter parametrizing the extra perturbative Higgs vacuum breaking and produce masses for neutrinos of three generations. We reach a sum of three-generation neutrino massess at: $Σ_{(ν)} ~ m_ν \approx 0.104078 ~eV$. This prediction is supported by the result of the latest cosmological observation, i.e. the 95\% C.L. upper bound $Σ_{(ν)} ~ m_ν < 0.176 ~eV$ determined by the Planck data. In our proposal of the modified Higgs mechanism, the Higgs vacua break twice, such that, the very minuteness of the extra Higgs vacuum breaking explains the origin of the very minuteness of neutrino masses, while the relative greatness of the standard Higgs vacuum breaking is recognized as the origin of the relative greatness of charged lepton masses. This proposal can bring rich new physics to Higgs-relevant problems in particle physics, besides the massive neutrino problems.

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