论文标题
带有右手中微子的惰性higgs Doublet模型的真空稳定性
Vacuum Stability in Inert Higgs Doublet Model with Right-handed Neutrinos
论文作者
论文摘要
我们分析了标准模型（SM）的惰性Higgs双重延伸的真空稳定性，并通过右手中微子（RHNS）增强，以通过Seesaw机制在树级上解释中微子肿块。我们对高规模和低尺度的Seesaw情景进行了比较研究，以及野生中微子Yukawa耦合对Higgs潜力稳定性的影响。标量四分之一的耦合和Dirac Yukawa耦合的边界是从真空稳定性和扰动考虑因素中获得的。确定了对应于稳定性，亚稳定性和不稳定性的区域。这些理论上的约束为可以在LHC和未来的颜色颜料进行测试的新标量和RHN的耦合和质量提供了非常预测的参数空间。最轻的非SM中性CP-even/奇数标量可能是一个很好的暗物质候选者，并且该模型还可以预测相应的对撞机签名。
We analyze the vacuum stability in the inert Higgs doublet extension of the Standard Model (SM), augmented by right-handed neutrinos (RHNs) to explain neutrino masses at tree level by the seesaw mechanism. We make a comparative study of the high- and low-scale seesaw scenarios and the effect of the Dirac neutrino Yukawa couplings on the stability of the Higgs potential. Bounds on the scalar quartic couplings and Dirac Yukawa couplings are obtained from vacuum stability and perturbativity considerations. The regions corresponding to stability, metastability and instability of the electroweak vacuum are identified. These theoretical constraints give a very predictive parameter space for the couplings and masses of the new scalars and RHNs which can be tested at the LHC and future colliders. The lightest non-SM neutral CP-even/odd scalar can be a good dark matter candidate and the corresponding collider signatures are also predicted for the model.
