19–22 Jan 2026
CERN
Europe/Zurich timezone

Antiprotons Under the Precision Microscope

21 Jan 2026, 09:45
15m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
Show room on map

Speaker

Prof. Stefan Ulmer (HHU Düsseldorf / RIKEN)

Description

The BASE collaboration is performing the most precise measurements of the fundamental properties of the proton and the antiproton. Charge-to-mass ratios were compared with a fractional resolution on the 16 parts in a trillion level, and coherent antiproton spin spectroscopy will establish measurements on the sub-parts per billion level. In addition to these world-record measurements, we have used our data to set limits on antiproton/dark matter coupling and parameter-ranges in which milli-charged dark matter can exist. In my talk I will review the achievements of the BASE collaboration since the start of the program, and will give an outlook on the future strategy of the collaboration. This includes antimatter transport, antiproton spectroscopy in dedicated offline laboratories, quantum-logic spectroscopy with antiprotons, advanced measurement protocols with antimatter Q-bits, and other cutting-edge projects that follow the vision to bring precision antiproton spectroscopy to ultimate resolution-limits.

Topic Experiments

Author

Prof. Stefan Ulmer (HHU Düsseldorf / RIKEN)

Presentation materials