重访镜像世界的电子偶素振荡
Positronium oscillations to Mirror World revisited
摘要：
我们提出了一个计算的分支比的正电子偶素衰变到一个不可见的模式，这是在镜像世界模型的背景下，普通的正电子偶素可以从我们的世界消失，由于振荡到它的镜像孪生。在此修订中，我们澄清了以前使用的一些公式和近似值，在某些地方进行了更正，添加了与可行实验相关的新效应，最后进行了组合分析。我们考虑到各种影响，由于外部磁场和电场，碰撞与腔壁和散射的气体原子在腔中。里德堡电子偶素的振荡也被考虑。为了在现实情况下进行数值估计，我们编写了计算机代码，可以在任何实验设置中采用。它的工作说明了一个例子，计划中的正电子素实验在AEgIS项目。
英文摘要：
We present a calculation of the branching ratio of orthopositronium decay into an invisible mode, which is done in the context of Mirror World models, where ordinary positronium can disappear from our world due to oscillation into its mirror twin. In this revision we clarify some formulas and approximations used previously, correct them at some places, add new effects relevant for a feasible experiment and finally perform a combined analysis. We include into consideration various effects due to external magnetic and electric fields, collisions with cavity walls and scattering off gas atoms in the cavity. Oscillations of the Rydberg positroniums are also considered. To perform a numerical estimates in a realistic case we wrote computer code, which can be adopted in any experimental setup. Its work is illustrated with an example of a planned positronium experiment within the AEgIS project.
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