New precise measurement of muonium hyperfine structure interval at J-PARC

Y. Ueno,M. Aoki,Y. Fukao,Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo,K. Ishida, T. U. Ito,M. Iwasaki, R. Kadono,O. Kamigaito,S. Kanda,D. Kawall, N. Kawamura, A. Koda,K. M. Kojima,M. K. Kubo,Y. Matsuda,T. Mibe, Y. Miyake,T. Mizutani, K. Nagamine, K. Nishiyama,T. Ogitsu, R. Okubo,N. Saito,K. Sasaki,K. Shimomura,P. Strasser,M. Sugano,M. Tajima,K. S. Tanaka, D. Tomono,H. A. Torii, E. Torikai,A. Toyoda,K. Ueno, A. Yamamoto, M. Yoshida

Hyperfine Interactions（2017）

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摘要

MuSEUM is an international collaboration aiming at a new precise measurement of the muonium hyperfine structure at J-PARC (Japan Proton Accelerator Research Complex). Utilizing its intense pulsed muon beam, we expect a ten-fold improvement for both measurements at high magnetic field and zero magnetic field. We have developed a sophisticated monitoring system, including a beam profile monitor to measure the 3D distribution of muonium atoms to suppress the systematic uncertainty.

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关键词

Muonium, Spectroscopy, Bound-state QED

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