Precision Physics with Low-energy Antiprotons -from AD to FLAIR

TL;DR

This paper reviews current and future experiments with low-energy antiprotons, highlighting advancements in spectroscopy of exotic atoms and the potential for new physics at upcoming facilities like FLAIR.

Contribution

It introduces the planned FLAIR facility, which will significantly increase antiproton flux and enable new experiments in nuclear and particle physics.

Findings

Current experiments successfully perform antiprotonic helium spectroscopy.

Future FLAIR facility will provide 100 times higher antiproton flux.

Continuous antiproton beams will enable novel experimental approaches.

Abstract

Experiments with low-energy antiprotons are currently performed at the Antiproton Decelerator of CERN. The main experiments deal with the spectroscopy of antiprotonic helium, an exotic three-body system, and the formation and spectroscopy of antihydrogen. A next generation facility FLAIR (Facility for Low-energy Antiproton Rsearch) is planned at the FAIR facility, generating a factor 100 higher flux of stopped antiprotons and also offering continuous antiprotons beam, which will enable nuclear and particle physics type experiments.