In particle physics, a rho meson is a short-lived hadronic particle that is an isospin triplet whose three states are denoted as {SubatomicParticle|Rho+}, {SubatomicParticle|Rho0} and {SubatomicParticle|Rho-}. After the pions and kaons, the rho mesons are the lightest strongly interacting particle with a mass of roughly {val|770|ul=MeV} for all th...