HEAVY-QUARK FRAGMENTATION TO POLARIZED QUARKONIUM

We calculate the polarisation of psi's and UPSILON's produced by the f ragmentation of heavy quarks. We find that fragmentation to transverse ly aligned quarkonium is slightly enhanced relative to longitudinally polarised quarkonium. This net alignment corresponds to a approximatel y 5% asymmetry in the angular distribution of leptons produced in the subsequent decay of the quarkonium. We point out that the leading gluo n contribution to psi and UPSILON production arises from the evolution of the charm quark fragmentation function, rather than from direct gl uon fragmentation.