11
Mar 10

Heavy antimatter created in gold collisions

Source: Nature


Simulation of a particle collision at ATLAS (CERN).Credit: Royal Institute of Technology (KTH).

Physicists have rooted through a morass of collisions to find the heaviest antimatter nucleus yet inside one of their particle accelerators.

Collisions between gold nuclei at the Relativistic Heavy Ion Collider (RHIC) on Long Island, New York, have yielded heavy isotopes of antihydrogen that include a subatomic particle known as an antistrange quark, which is heavier than less unusual up or down quarks.(read more)

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