RHIC creates heaviest form of antimatter seen so far
MAR 24, 2011
DOI: 10.1063/PT.5.025163
New Scientist : The Relativistic Heavy Ion Collider in Upton, New York, has created the heaviest form of antimatter seen so far—antihelium nuclei, which contain two antiprotons and two antineutrons. The most complex unit of antimatter discovered to date had been the counterpart of the helium-3 nucleus, which contains two antiprotons and one antineutron. However, “it doesn’t take us nearer to the big question of why is the universe at large not full of antimatter?” said Frank Close of the UK’s University of Oxford. That question may be answered by the Alpha Magnetic Spectrometer, scheduled to launch on the space shuttle in April.
© 2011 American Institute of Physics
