Neutrino masses in the Lee-Wick standard model
Neutrino masses in the Lee-Wick standard model
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Lee-Wick 标准模型中的中微子质量
DOI：
10.1103/physrevd.77.085002
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发表时间：
2007
影响因子：
5
通讯作者：
M. Wise
中科院分区：
文献类型：
--
作者：
J. Espinosa;B. Grinstein;D. O’Connell;M. Wise
最近，基于Lee和Wick的思想，对标准模型进行了扩展。这个理论没有二次散度，因此有一个对辐射修正稳定的希格斯质量。在这里，我们讨论的问题是，是否有可能将质量远远大于弱尺度的非常重的粒子耦合到Lee-Wick标准模型的自由度上，并且仍然保持弱尺度的稳定性。我们表明，在lw标准模型中，产生中微子质量的常见跷跷板机制保留了高导数项提供的层次谜题的解决方案。非常重的右手中微子不会破坏希格斯质量的稳定。我们给出了一个会破坏层次结构稳定的新重自由度的例子，并讨论了在保持层次结构的同时将其他重自由度耦合到希格斯双重态的一般机制。
Recently, an extension of the standard model based on ideas of Lee and Wick has been discussed. This theory is free of quadratic divergences and hence has a Higgs mass that is stable against radiative corrections. Here, we address the question of whether or not it is possible to couple very heavy particles, with masses much greater than the weak scale, to the Lee-Wick standard model degrees of freedom and still preserve the stability of the weak scale. We show that in the LW-standard model the familiar seesaw mechanism for generating neutrino masses preserves the solution to the hierarchy puzzle provided by the higher derivative terms. The very heavy right-handed neutrinos do not destabilize the Higgs mass. We give an example of new heavy degrees of freedom that would destabilize the hierarchy, and discuss a general mechanism for coupling other heavy degrees of freedom to the Higgs doublet while preserving the hierarchy.