19–22 Jan 2026
CERN
Europe/Zurich timezone

Precision laser spectroscopy of exotic helium atoms to determine the antiproton-to-electron mass ratio, and the charged pion and kaon masses

21 Jan 2026, 12:00
15m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
Show room on map

Speaker

Masaki Hori (Imperial College London)

Description

The ASACUSA collaboration of CERN carries out precision laser spectroscopy of exotic helium atoms that contain antiprotons at CERN's Antiproton Decelerator, and pions at PSI's 590 MeV Ring Cyclotron facility. In the future we plan to extend these studies to determine the antiproton-to-electron mass ratio and the charged pion mass to much higher precision than before. We are also carrying out preliminary studies for future experiments on laser spectroscopy of kaonic helium atoms at the DAPHNE facility of INFN Frascati to determine the charged kaon mass.

Topic Experiments

Author

Masaki Hori (Imperial College London)

Presentation materials