离子储存环时间调制轨道电子俘获衰变中中微子振荡的动力学和量子场论
Kinematics and Quantum Field Theory of the Neutrino Oscillations Observed in the Time-modulated Orbital Electron Capture Decay in an Ion Storage Ring
摘要：
根据GSI实验的最新实验数据，由类H离子${^{140}}{\rm Pr}^{58+}$的核K壳层电子捕获（EC）产生的子离子$^{140}{\rm Ce}^{58+}$的数目的速率在时间上以周期$T_d=(7.06\pm 8) $秒调制。我们解释这种现象的中微子味混合，并表明，这可以理解标准的量子场论，并得出一个值的平方质量差$Δm^2_{21}=m^2_2-m^2_1=(0.763\pm 8) \cdot 10^{-4} \mathrm{eV}^2$。这证明了这样的过程提供了一个精确的方法来研究中微子-味道混合。
英文摘要：
According to the recent experimental data of a GSI--experiment, the rate of the number of daughter ions $^{140}{\rm Ce}^{58+}$, produced by a nuclear K--shell electron capture (EC) of the H--like ion ${^{140}}{\rm Pr}^{58+}$, is modulated in time with a period $T_d=(7.06\pm 8) $seconds. We explain this phenomenon by neutrino--flavour mixing and show that this can be understood within standard quantum field theory and derive a value for the squared mass difference $Δm^2_{21}=m^2_2-m^2_1=(0.763\pm 8) \cdot 10^{-4} \mathrm{eV}^2$. This proves that such processes provide a precise method to investigate neutrino--flavour mixing.
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