Mesons

Synonyms

Meson

Muon

Muons

Pion

Pions

mu Mesons

mu-Meson

mu-Mesons

pi Mesons

pi-Meson

pi-Mesons

Short-lived elementary particles found in cosmic radiation or produced from nuclear disintegration. Their mass is between that of protons and electrons and they can be negative, positive, or neutral. pi-Mesons (pions) are heavier than mu-mesons (muons) and are proposed for cancer radiotherapy because their capture and disintegration by matter produces powerful, but short-lived, secondary radiation.