2021年4月
New precise spectroscopy of the hyperfine structure in muonium with a high-intensity pulsed muon beam
Physics Letters B
- 巻
- 815
- 号
- 開始ページ
- 136154
- 終了ページ
- 136154
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physletb.2021.136154
- 出版者・発行元
- Elsevier BV
A hydrogen-like atom consisting of a positive muon and an electron is known as muonium. It is a near-ideal two-body system for a precision test of bound-state theory and fundamental symmetries. The MuSEUM collaboration performed a new precision measurement of the muonium ground-state hyperfine structure at J-PARC using a high-intensity pulsed muon beam and a high-rate capable positron counter. The resonance of hyperfine transition was successfully observed at a near-zero magnetic field, and the muonium hyperfine structure interval of νHFS=4.463302(4)GHz was obtained with a relative precision of 0.9 ppm. The result was consistent with the previous ones obtained at Los Alamos National Laboratory and the current theoretical calculation. We present a demonstration of the microwave spectroscopy of muonium for future experiments to achieve the highest precision.
- リンク情報
- ID情報
-
- DOI : 10.1016/j.physletb.2021.136154
- ISSN : 0370-2693
- SCOPUS ID : 85101692035