Charmonium Production in Fermilab E789

Details Charmonium Production in Fermilab E789 Charmonium Production in Fermilab E789

1996-10-05

arxiv.org/abs/hep-ex/9610003v1

Int.J.Mod.Phys.A12:3827-3836,1997

Physics

High Energy Physics

High Energy Physics - Experiment

Invited talk presented at the Quarkonium Physics Workshop, University of Illinois at Chicago, June 13-15, 1996. 10 pages, LaTe

Scientific paper

10.1142/S0217751X97001985

Using a sample of >10^5 J/psi to mu+mu- decays, Fermilab experiment 789 has studied production of J/psi and psi-prime in 800-GeV proton-nucleon collisions. Differential cross sections and nuclear dependences have been measured for charmonium as well as for charm and beauty production. While charm and beauty production are consistent with perturbative QCD calculations, charmonium cross sections exceed the predictions of the color-singlet model by large factors, suggesting that additional mechanisms (such as color-octet production) may play important roles. Nuclear dependences of production cross sections may offer a new tool for the detailed understanding of charmonium production.

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