Neutrino Masses in Theories with Dynamical Electroweak Symmetry Breaking(SUMMER INSTITUTE 2003)
Neutrino Masses in Theories with Dynamical Electroweak Symmetry Breaking(SUMMER INSTITUTE 2003)
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DOI：
10.1016/s0370-2693(02)02854-x
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发表时间：
2002-04
期刊：
影响因子：
--
通讯作者：
T. Appelquist;R. Shrock
中科院分区：
文献类型：
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作者：
T. Appelquist;R. Shrock
在动力学电弱对称破缺理论中，我们讨论了轻中微子质量的解释问题。我们在一类(扩展的)彩色(ETC)模型的背景下讨论这一点，并分析在这些理论中出现的全套狄拉克和马约拉纳质量。作为一种可能的解决方案，我们提出了一种抑制狄拉克质量和包括动态生成的|ΔL|=2标准模型单态等凝聚态的拉锯的组合-非单态费米子。我们展示了如何在一个显式的ETC模型中实现这一点。这一提议的一个重要特征是，由于狄拉克中微子质量项的抑制，产生真实中微子质量的拉锯不需要超重的Majorana质量；实际上，这些Majorana质量通常比最大的ETC尺度小得多。
We address the problem of accounting for light neutrino masses in theories with dynamical electroweak symmetry breaking. We discuss this in the context of a class of (extended) technicolor (ETC) models and analyze the full set of Dirac and Majorana masses that arise in such theories. As a possible solution, we propose a combination of suppressed Dirac masses and a see-saw involving dynamically generated |ΔL|=2 condensates of standard model singlet, ETC-non-singlet fermions. We show how this can be realized in an explicit ETC model. An important feature of this proposal is that, because of the suppression of Dirac neutrino mass terms, a see-saw yielding realistic neutrino masses does not require superheavy Majorana masses; indeed, these Majorana masses are typically much smaller than the largest ETC scale.