論文

2021年4月

New precise spectroscopy of the hyperfine structure in muonium with a high-intensity pulsed muon beam

Physics Letters B
  • S. Kanda
  • Y. Fukao
  • Y. Ikedo
  • K. Ishida
  • M. Iwasaki
  • D. Kawall
  • N. Kawamura
  • K.M. Kojima
  • N. Kurosawa
  • Y. Matsuda
  • T. Mibe
  • Y. Miyake
  • S. Nishimura
  • N. Saito
  • Y. Sato
  • S. Seo
  • K. Shimomura
  • P. Strasser
  • K.S. Tanaka
  • T. Tanaka
  • H.A. Torii
  • A. Toyoda
  • Y. Ueno
  • 全て表示

815
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
DOI
https://doi.org/10.1016/j.physletb.2021.136154
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85101692035&origin=inward 本文へのリンクあり
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85101692035&origin=inward
ID情報
  • DOI : 10.1016/j.physletb.2021.136154
  • ISSN : 0370-2693
  • SCOPUS ID : 85101692035

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