Antiproton

The antiproton is the antiparticle of the proton. Antiprotons are stable, but they are typically short-lived since any collision with a proton will cause both particles to be annihilated in a burst of energy. It was discovered in 1955 by University of California, Berkeley physicists Emilio Segre and Owen Chamberlain, for which they were awarded the 1959 Nobel Prize in Physics.

See Also

Antimatter and Positron.