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arXiv 1008.0306hep-phhep-thquant-ph
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中微子振荡的图解处理

A diagrammatic treatment of neutrino oscillations

Dmitry V. Naumov, Vadim A. Naumov

摘要:

提出了一种研究真空中中微子味跃迁的协变波包方法。该方法是基于宏观费曼图描述轻子数违反过程的生产和吸收的虚拟大质量中微子在宏观分离的时空区域(“源”和“检测器”)的技术。因此,味跃迁是在中间态中不同质量的中微子干扰图的结果。该过程的统计平均概率可表示为描述来自源的无质量中微子的微分通量密度、中微子与探测器相互作用的微分截面以及负责味转变的无量纲因子的乘积的多维积分。分析了最后一个因子可以作为通常量子力学意义上的味跃迁几率的条件。

英文摘要:

We present a covariant wave-packet approach to neutrino flavor transitions in vacuum. The approach is based on the technique of macroscopic Feynman diagrams describing the lepton number violating processes of production and absorption of virtual massive neutrinos at the macroscopically separated space-time regions ("source" and "detector"). Accordingly, the flavor transitions are a result of interference of the diagrams with neutrinos of different masses in the intermediate states. The statistically averaged probability of the process is representable as a multidimensional integral of the product of the factors which describe the differential flux density of massless neutrinos from the source, differential cross section of the neutrino interaction with the detector and a dimensionless factor responsible for the flavor transition. The conditions are analyzed under which the last factor can be treated as the flavor transition probability in the usual quantum-mechanical sense.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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