Analysis of charmonium production at fixed-target experiments in the   NRQCD approach
  We present an analysis of the existing data on charmonium hadro-production based on non-relativistic QCD (NRQCD) calculations at the next-to-leading order (NLO). All the data on J/psi and psi' production in fixed-target experiments and on pp collisions at low energy are included. We find that the amount of color octet contribution needed to describe the data is about 1/10 of that found at the Tevatron. 
F. Maltoni, J. Spengler, M. Bargiotti, A. Bertin, M. Bruschi, S. De   Castro, L. Fabbri, P. Faccioli, B. Giacobbe, F. Grimal...