particles Ref: PDG, 2008: 1 hadrons - composite particles Ref: PDG, 2008: 15 baryons - fermionic hadrons Ref: PDG, 2008: 1, 15, 76 Xi baryons - baryons with one u or d quark (I=1/2) Ref: PDG, 2008: 84, 1166 [Xi(1820)0] Ref: PDG, 2008: 85, 1173-1174 [inferred name]