A model for large non-standard interactions of neutrinos leading to the LMA-Dark solution
A model for large non-standard interactions of neutrinos leading to the LMA-Dark solution
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DOI：
10.1016/j.physletb.2015.07.015
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发表时间：
2015-05
影响因子：
4.4
通讯作者：
Y. Farzan
中科院分区：
文献类型：
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作者：
Y. Farzan
众所周知，除了太阳异常的标准LMA解决方案之外，还有另一种解决方案称为LMA- dark，它需要非标准相互作用（NSI），其有效耦合与费米耦合一样大。虽然该解满足各种中微子振荡观测的所有边界，甚至能更好地拟合低能太阳中微子谱，但它不像LMA解那样受欢迎，主要是因为迄今为止还没有构建与现有边界兼容的模型来产生该解。我们介绍了一个模型，该模型为LMA-Dark解决方案所需的具有强度和风味结构的大型NSI提供了基础。该模型是基于一种新的U(1)规范与质量为~ 10 MeV的规范玻色子的相互作用，在这种相互作用下，夸克以及第二代和第三代轻子都带电。我们表明，可观测的效应可以出现在超新星和高能宇宙中微子的光谱中。我们的模型预测了对介子磁偶极矩和新的罕见介子衰变模式的新贡献。
It is well-known that in addition to the standard LMA solution to solar anomaly, there is another solution called LMA-Dark which requires Non-Standard Interactions (NSI) with effective couplings as large as the Fermi coupling. Although this solution satisfies all the bounds from various neutrino oscillation observations and even provides a better fit to low energy solar neutrino spectrum, it is not as popular as the LMA solution mainly because no model compatible with the existing bounds has been so far constructed to give rise to this solution. We introduce a model that provides a foundation for such large NSI with strength and flavor structure required for the LMA-Dark solution. This model is based on a new U (1)′ gauge interaction with a gauge boson of mass∼ 10 MeV under which quarks as well as the second and third generations of leptons are charged. We show that observable effects can appear in the spectrum of supernova and high energy cosmic neutrinos. Our model predicts a new contribution to the muon magnetic dipole moment and new rare meson decay modes.