Delta baryon
The Delta baryons (or Δ baryons, also called Delta resonances) are a family of subatomic particle made of three up and/or down quarks, the same constituent quarks that make up the more familiar protons and neutrons. == Properties == Four closely related Δ baryons exist: Δ++ (constituent quarks: uuu), Δ+ (uud), Δ0 (udd), and Δ− (ddd), which respectively carry an electric charge of +2 e, +1 e, 0 e, and −1 e.