Quarkonia production at Fermilab

Recent data on J/ψ, ψ(2S), χc and Γ production has unraveled unexpected features of QQ bound states production in high-energy hadronic collisions. In the 1992-1995 runs CDF has collected large samples of J/ψ, ψ(2S) and Γ identified through their muonic decay. In the charmonium system all production sources have been separately measured and compared with the theoretical predictions. A large excess of direct production has been observed for both ψ(2S) and J/ψ, ψ(2S) and χc production from the fixed-target experiments E789, E705 and E672/706 are also presented. Important features of the production of charmonium states are shared by fixed-target and collider data