Constraints on abelian extensions of the Standard Model from two-loop vacuum stability and U(1)B−L
Constraints on abelian extensions of the Standard Model from two-loop vacuum stability and U(1)B−L
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双环真空稳定性和 U(1)B−L 对标准模型阿贝尔扩展的约束
DOI：
10.1007/jhep02(2016)135
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发表时间：
2015
影响因子：
5.4
通讯作者：
C. Marzo
中科院分区：
文献类型：
--
作者：
C. Corianò;L. D. Rose;C. Marzo
我们用重整化群研究了标准模型的极小U(1)B−L扩展中的标量势，该模型包含一个超重的希格斯中微子和三个重的右手中微子，具有族普适的B-L电荷。我们为标准模型中的轻中微子的质量实施了一种I型拉锯。特别是，与以前的研究相比，我们对演化进行了双环扩展，表明双环效应对于研究标量势在普朗克尺度下的稳定性是必不可少的。分析包括演化辐射产生的两个阿贝尔规范群之间的动力学混合的贡献，以及电弱尺度下的单圈匹配条件。通过要求势的稳定性直到普朗克质量，确定了对重中微子质量、规范耦合和希格斯扇区混合的重要约束。
A bstractWe present a renormalization group study of the scalar potential in a minimal U(1)B−L extension of the Standard Model involving one extra heavier Higgs and three heavy right-handed neutrinos with family universal B-L charge assignments. We implement a type-I seesaw for the masses of the light neutrinos of the Standard Model. In particular, compared to a previous study, we perform a two-loop extension of the evolution, showing that two-loop effects are essential for the study of the stability of the scalar potential up to the Planck scale. The analysis includes the contribution of the kinetic mixing between the two abelian gauge groups, which is radiatively generated by the evolution, and the one-loop matching conditions at the electroweak scale. By requiring the stability of the potential up to the Planck mass, significant constraints on the masses of the heavy neutrinos, on the gauge couplings and the mixing in the Higgs sector are identified.
影响因子：
4.4
作者：
L. Basso
通讯作者：
L. Basso