振荡现象中的中微子产生态--它们是纯的还是混合的？
Neutrino production states in oscillation phenomena - are they pure or mixed?
摘要：
讨论了由标准模型以外的机制产生的中微子的一般量子力学态。只有在相对论中微子与标准模型左手电荷流相互作用的情况下，中微子态才可用Maki-Nakagawa-Sakata-Pontecorvo幺正混合矩阵描述.考虑了从静止生产系到实验室系的洛伦兹变换引起的维格纳自旋转动问题。此外，从标准模型的推广出发，研究了中微子混合态随能量和参数的变化。两个来源的混合物，次主导螺旋状态的外观，和质量混合与几个不同的混合矩阵进行了研究。
英文摘要：
General quantum mechanical states of neutrinos produced by mechanisms outside the Standard Model are discussed. The neutrino state is described by the Maki-Nakagawa-Sakata-Pontecorvo unitary mixing matrix only in the case of relativistic neutrinos and Standard Model left-handed charge current interaction. The problem of Wigner spin rotation caused by Lorentz transformation from the rest production frame to the laboratory frame is considered. Moreover, the mixture of the neutrino states as a function of their energy and parameters from the extension of the Standard Model are investigated. Two sources of mixture, the appearance of subdominant helicity states, and mass mixing with several different mixing matrices are studied.
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