Antimatter - Matter's Hidden Shadow
This poster looks at the nature of antimatter. One side of the poster discusses Dirac’s prediction and the subsequent discovery of antimatter, in the form of the positron. The difficulty of the storage of antimatter is explained and the use of positrons in medical imaging (PET scanners) is described. The other side of the poster looks at experiments such as the Stanford Linear Collider, the Alpha Magnetic Spectrometer experiment on the International Space Station and the LHC. The apparent difference between the amount matter and antimatter in the universe, or 'CP violation', is also discussed. The poster was produced by the Particle Physics and Astronomy Research Council (PPARC). PPARC was replaced by the Science and Technology Facilities Council (STFC) in 2007. STFC is a part of the Research Councils UK (RCUK) partnership of research councils.