288 citations · 433 across the 11 of their papers we have counts for
11 papers
First Millimeter-wave Spectroscopy of the Ground-state Positronium
A. Miyazaki, T. Yamazaki, T. Suehara +7
We report on the first measurement of the Breit-Wigner resonance of the transition from {\it ortho-}positronium to {\it para-}positronium. We have developed an optical system to ac…
New Precision Measurement of Hyperfine Splitting of Positronium
A. Ishida, T. Namba, S. Asai +5
The ground state hyperfine splitting of positronium is sensitive to high order corrections of quantum electrodynamics (QED) in bound state. The theoretical predi…
First direct measurement of positronium hyperfine splitting with sub-THz light
T. Yamazaki, A. Miyazaki, T. Suehara +8
Positronium is an ideal system for the research of the bound state QED. The hyperfine splitting of positronium (Ps-HFS, about 203 GHz) is an important observable but all previous m…
Precise measurement of positronium hyperfine splitting using the Zeeman effect
A. Ishida, Y. Sasaki, G. Akimoto +8
Positronium is an ideal system for the research of the quantum electrodynamics (QED) in bound state. The hyperfine splitting (HFS) of positronium, , gives a good…
Detection of the Direct Hyperfine Transition of Positronium Atoms using sub-THz High-power Radiation
T. Suehara, A. Miyazaki, T. Yamazaki +11
Hyperfine splitting of positronium is an important parameter for particle physics. This paper gives experimental techniques and results of R&D studies of our experiment to observe…
Probing the Energy Structure of Positronium with a 203 GHz Fabry-Perot Cavity
T Suehara, A Miyazaki, A Ishida +10
Positronium is an ideal system for the research of the bound state QED. The hyperfine splitting of positronium (Ps-HFS: about 203 GHz) is sensitive to new physics beyond the Standa…