ASACUSA

An ANTIMATTER experiment at CERN's Antiproton Decelerator studying:

• Antihydrogen:
  Ground-state hyperfine splitting measurement, for testing the CPT symmetry.
  
  
  • Antihydrogen Formation in the CUSP Trap (RIKEN)
  • Antihydrogen Microwave Spectroscopy (SMI)


• Antiprotonic Helium:
  Laser and microwave precision spectroscopy of antiprotonic helium atoms (i.e., antiproton+electron+helium nucleus) for testing the CPT (matter-antimatter) symmetry, and contributing to the fundamental physical constants.
  
  
  • Antiprotonic Helium Laser Spectroscopy (MPQ)


• Atomic and nuclear collision cross sections at extremely low energies.
  
  
  • Collisions with Antiparticles (Aarhus)