The Sigma baryons are a family of subatomic hadron particles which have a +2, +1 or −1 elementary charge or are neutral. They are baryons containing three quarks: two up and/or down quarks, and one third quark, which can be either a strange (symbols {SubatomicParticle|Sigma+}, {SubatomicParticle|Sigma0}, {SubatomicParticle|Sigma-}), a charm (sym...