This is one of the main scientific programs at SMI. Precision experiments at low energy are a complementary way to finding new physics as compared to the quest for achieving highest energies at accelerators. SMI is pursuing several experiments in this field:

Antihydrogen spectroscopy: Physical laws are believed to be invariant under the combined transformations of charge (C), parity (P), and time (T) reversal. This CPT symmetry implies that antimatter particles have exactly the same mass and charge as their particle counterparts. Within the ASACUSA program at the Antiproton Decelerator at CERN (CH), SMI is involved in the measurement of the ground-state hyperfine splitting of antihydrogen, the simplest antimatter atom consisting of a positron and an antiproton. [Read more...]