Polarization of Prompt J/psi and Upsilon(nS)

Abstract

We review predictions, based on the nonrelativistic QCD factorization framework, for the polarizations of prompt J/psi's and Upsilon(nS)'s produced at the Fermilab Tevatron. We also discuss the effect of relativistic corrections on the theoretical prediction for the polarization of prompt J/psi's at the Tevatron.

Comments: 5 pages, 2 figures, presented at DIS2002, Cracow, April 30-May 4, 2002