dorsal/arxiv
View SchemaHigh resolution spectroscopy of muonium
| Authors | K. Jungmann |
|---|---|
| Categories | |
| ArXiv ID | physics/9805019 |
| URL | https://arxiv.org/abs/physics/9805019 |
Abstract
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.
{
"annotation_id": "9526f2ec-75e3-4f2c-b16c-e6c7824f7f25",
"date_created": "2026-03-02T18:01:21.275000Z",
"date_modified": "2026-03-02T18:01:21.275000Z",
"file_hash": "f220328aa0336bc6d33d7963fe22cb1904d436d1a83921e58b21003ee94aff31",
"private": false,
"record": {
"abstract": "The hydrogen-like muonium atom ($\\mu^+e^-$) consists of a positive muon\n($\\mu^+$) and an electron ($e^-$). Since it was first observed by Hughes et al.\nin 1960, a series of precision experiments could be carried out testing bound\nstate Quantum Electrodynamics (QED) and the nature of the muon as a point-like\nleptonic particle. Precision values for fundamental constants could be\nobtained, including the fine structure constant $\\alpha$ and the muon\u0027s\nmagnetic moment $\\mu_{\\mu}$. Since no internal structure could be revealed for\nleptons down to dimensions of $10^{-18}$m, the accuracy of theoretical\ncalculations of term energies is higher than for the natural hydrogen atom and\nits isotopes deuterium and tritium as well as exotic hydrogen-like systems\nwhich contain hadrons. Internal structure effects of these particles spoil the\nprecision of theoretical results. Of particular interest for precision muonium\nexperiments, which are carried out in order to test standard theory and to\nextract accurate values for fundamental constants, are the ground state\nhyperfine structure splitting $\\Delta \\nu_{HFS}$ and the 1s-2s interval $\\Delta\n\\nu_{1s2s}$. Both cases involve the n=1 ground state in which the atoms can be\nproduced in sufficient quantities.",
"arxiv_id": "physics/9805019",
"authors": [
"K. Jungmann"
],
"categories": [
"physics.atom-ph",
"physics.acc-ph"
],
"title": "High resolution spectroscopy of muonium",
"url": "https://arxiv.org/abs/physics/9805019"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "468b313c-d1eb-4c16-bdb3-edb8d185f2f0",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}