83 citations · 127 across the 7 of their papers we have counts for
8 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…
Direct Observation of the Hyperfine Transition of the Ground State Positronium
T. Yamazaki, A. Miyazaki, T. Suehara +7
We report the first direct measurement of the hyperfine transition of the ground state positronium. The hyperfine structure between ortho-positronium and para-positronium is about…
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…
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…
Precise measurement of Hyper Fine Structure of positronium using sub-THz light
S. Asai, T. Suehara, T. Yamazaki +9
Positronium is an ideal system for the research of the QED, especially for the QED in bound state. The discrepancy of 3.9σis found recently between the measured HFS values and the…
Precise measurement of HFS of positronium
A. Ishida, G. Akimoto, K. Kato +11
The ground state hyperfine splitting in positronium, , is sensitive to high order corrections of QED. A new calculation up to has revealed a disc…