出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/30 10:03 UTC 版)
The antiproton (p, pronounced p-bar), which is also sometimes referred to as a negatron, 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.