Pion - Wikipedia
2019-6-13 · In pairticle pheesics, a pion (short for pi meson, denotit wi π) is ony o three subatomic pairticles: π 0 π +, an π −Each pion consists o a quark an an antiquark an is tharefore a meson.Pions are the lichtest mesons an thay play an important role in explainin the law-energy properties o the strang nuclear force.. Pions are unstable, wi the charged pions
