Neutrino-antineutrino mass splitting in the Standard Model and baryogenesis
Neutrino-antineutrino mass splitting in the Standard Model and baryogenesis
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标准模型和重子发生中的中微子-反中微子质量分裂
DOI：
10.1016/j.physletb.2015.01.053
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发表时间：
2015
影响因子：
4.4
通讯作者：
Ance Tureanu
中科院分区：
文献类型：
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作者：
Kazuo Fujikawa;Ance Tureanu
在标准模型中提出的中微子-反中微子质量分裂机制的基础上，讨论了中微子-反中微子质量分裂对中微子物理和重子生成的可能意义.结果表明，在普朗克长度的距离尺度内的非局部性，这可能不是致命的么正性在一个通用的有效理论，可以产生中微子-反中微子质量分裂的顺序所观察到的中微子质量差，这是在振荡实验中测试，和一个不可忽略的重子不对称性取决于估计的sphaleron动力学。在标准模型中，单圈序诱导的电子-正电子质量分裂被证明是有限的，估计为10− 20 eV，远低于实验界< 10− 2 eV。在标准模型中，K介子的CPT诱导破坏预计会更小，并远低于实验界|m K− m K <$|< 0.44× 10− 18 GeV。
On the basis of a previously proposed mechanism of neutrino–antineutrino mass splitting in the Standard Model, which is Lorentz and SU (2)× U (1) invariant but non-local to evade the CPT theorem, we discuss the possible implications of neutrino–antineutrino mass splitting on neutrino physics and baryogenesis. It is shown that non-locality within a distance scale of the Planck length, that may not be fatal to unitarity in a generic effective theory, can generate the neutrino–antineutrino mass splitting of the order of the observed neutrino mass differences, which is tested in oscillation experiments, and a non-negligible baryon asymmetry depending on the estimate of sphaleron dynamics. The one-loop order induced electron–positron mass splitting in the Standard Model is shown to be finite and estimated at∼ 10− 20 eV, well below the experimental bound< 10− 2 eV. The induced CPT violation in the K-meson in the Standard Model is expected to be even smaller and well below the experimental bound| m K− m K¯|< 0.44× 10− 18 GeV.