标题： 缪子的高分辨率光谱学 显示英文标题

标题： High resolution spectroscopy of muonium

摘要： 氢类似μ子原子（$\mu^+e^-$）由一个正μ子（$\mu^+$）和一个电子（$e^-$）组成。 自1960年Hughes等人首次观察到以来，进行了一系列精密实验，用于检验束缚态量子电动力学（QED）以及μ子作为点状轻子粒子的性质。 可以得到基本常数的精确值，包括精细结构常数$\alpha$和μ子的磁矩$\mu_{\mu}$。 由于在小于$10^{-18}$米的尺度下未能揭示轻子的内部结构，因此这些粒子的能级理论计算精度高于自然氢原子及其同位素氘和氚以及包含强子的奇异氢类似系统。 这些粒子的内部结构效应会破坏理论结果的精度。 对于精密μ子原子实验而言，这些实验旨在检验标准理论并提取基本常数的精确值，感兴趣的是基态超精细结构分裂$\Delta \nu_{HFS}$和 1s-2s 区间$\Delta \nu_{1s2s}$。 两种情况都涉及 n=1 基态，其中原子可以以足够的数量产生。 显示英文摘要

摘要： The hydrogen-like muonium atom ($\mu^+e^-$) consists of a positive muon ($\mu^+$) and an electron ($e^-$). Since it was first observed by Hughes et al. in 1960, a series of precision experiments could be carried out testing bound state Quantum Electrodynamics (QED) and the nature of the muon as a point-like leptonic particle. Precision values for fundamental constants could be obtained, including the fine structure constant $\alpha$ and the muon's magnetic moment $\mu_{\mu}$. Since no internal structure could be revealed for leptons down to dimensions of $10^{-18}$m, the accuracy of theoretical calculations of term energies is higher than for the natural hydrogen atom and its isotopes deuterium and tritium as well as exotic hydrogen-like systems which contain hadrons. Internal structure effects of these particles spoil the precision of theoretical results. Of particular interest for precision muonium experiments, which are carried out in order to test standard theory and to extract accurate values for fundamental constants, are the ground state hyperfine structure splitting $\Delta \nu_{HFS}$ and the 1s-2s interval $\Delta \nu_{1s2s}$. Both cases involve the n=1 ground state in which the atoms can be produced in sufficient quantities.