Neutrino masses and mixing
Neutrino masses and mixing
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发表时间：
1996-01
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通讯作者：
S. Bilenky
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作者：
S. Bilenky
中微子性质的研究是当今中微子物理学的一个重要课题。关键问题是中微子质量的问题。如果中微子质量很大，它们可以混合。如果总轻子数守恒，大质量中微子就是狄拉克粒子。如果中微子质量是由不守恒轻子总数的相互作用产生的，那么具有确定质量的中微子就是马约拉纳粒子。所有这些可能性都对应于不同的规范理论，而它们能够在实验上加以区分是非常重要的。目前有60多个不同的实验正在进行，以寻找中微子的质量，性质和混合的影响，人们普遍认为，中微子性质的研究可以使我们达到新的物理学。在本报告中，我将讨论：1。中微子混合的可能2.真空和物质中的中微子振荡。3.实验表明有利于中微子质量和混合。根据现有的数据，味中微子νe、νμ和ντ通过标准的CC和NC相互作用与物质相互作用
The investigation of neutrino properties is a very important problem of today’s neutrino physics. The key problem is the problem of neutrino masses. If neutrinos are massive, they can be mixed. If the total lepton number is conserved, massive neutrinos are Dirac particles. If the neutrino masses are generated by an interaction that does not conserve the total lepton number, neutrinos with definite mass are Majorana particles. All this possibilities correspond to different gauge theories and it is very important that they can be distinguished experimentally. There are more than 60 different experiments that are going on at present on the search for effects of the masses, nature and mixing of neutrinos, and there is a general belief that investigation of neutrino properties could allow us to reach new physics. In this reports I will discuss: 1. possibilities of neutrino mixing. 2. neutrino oscillations in vacuum and in matter. 3. experimental indications in favor of neutrino masses and mixing. From all existing data it follows that flavor neutrinos νe, νμ and ντ interact with matter via standard CC and NC interactions