Hab HFS-Hyperfine Structure of Antihydrogen H̅-HFS Antihydrogen and HFS CPT Symmetry ERC Grant Goal Methodology Phase 1 Phase 2 Phase 3 Literature Deutsche Einführung AEgIS (discontinued) Public Info HyDRA GRASIAN The Stefan Meyer Institute is involved in several experiments studying the matter-antimatter symmetry using hydrogen and antihydrogen ASACUSA