SPIN SYMMETRY PREDICTIONS FOR HEAVY QUARKONIA ALIGNMENT

We investigate the implications of spin symmetry for heavy quarkonia p roduction and decay, We first compare spin symmetry predictions for ch armonia and bottomonia radiative transitions with data and find they a gree quite well, We next use spin symmetry along with nonrelativistic QCD power counting to determine the leading order alignment of P- and D-wave orthoquarkonia that are produced through gluon fragmentation. F inally, we discuss a mechanism which may resolve the current factor of 30 discrepancy between theoretical predictions and experimental measu rements of prompt psi' production at the Tevatron. This mechanism invo lves gluon fragmentation to a subleading Fock component in the psi' wa vefunction and yields 100% transversely aligned psi's to lowest order. Observation of such a large alignment would provide strong support fo r this resolution to the psi' problem.