  The NRQCD factorization approach for calculating inclusive production of
heavy quarkonium gives unambiguous predictions for the polarization of
quarkonium states. The factorization formula for polarized states can be
obtained by using the threshold expansion method to calculate the
short-distance coefficients and then using symmetries of NRQD to reduce the
NRQCD matrix elements. A particularly dramatic prediction of the NRQCD
factorization framework is that prompt psi's and psi-primes's produced at the
Tevatron should be predominantly transversely polarized at large transverse
momentum.
