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arXiv 1406.5503hep-ph
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马约拉纳中微子物理专题

Selected Topics in Majorana Neutrino Physics

Luciano Maiani

备注：
Lectures Notes from the Ettore Majorana Lectures, Diaprtimento di Fisica, Universita' Federico II, Napoli, March 2014. Rivista del Nuovo Cimento, 2014
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摘要：

从1937年Majorana的文章出发，首先对一代中微子和三代中微子的跷跷板机制进行了说明，并考虑了无中微子双β衰变。中微子混合和振荡在三种口味。汤川耦合到希格斯场的夸克和轻子被认为是，他们的变换性质下相应的味道群的阐述和最小味道违反的原则说明，在连接可能的新物理超越标准理论。引入了Yukawa耦合可能是某些新场的真空期望值的思想，刻画了在夸克和轻子味群下不变的势的自然极值。最近的一个结果表明几乎简并中微子的大混合是由味${\cal O}(3)$下的重轻子不变性导出的。

英文摘要：

Starting from the original Majorana's article of 1937, the see-saw mechanism is illustrated, first for one and later for three neutrino generations, and neutrinoless double beta decay is considered. Neutrino mixing and oscillations in three flavors are described. The Yukawa couplings to the Higgs field of quarks and leptons are considered, their transformation properties under the corresponding flavor groups are spelled out and the principle of Minimal Flavor Violation is illustrated, in connection with possible new physics beyond the Standard Theory. The idea that the Yukawa couplings may be the vacuum expectation value of some new fields is introduced and natural extrema of potentials which are invariant under quark and lepton flavor groups are characterized. A recent result indicating large mixing of almost degenerate neutrinos is derived from the heavy lepton invariance under flavor ${\cal O}(3)$.

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