HADRONIC J PSI PRODUCTION CALCULATED IN THE NRQCD FACTORIZATION FORMALISM/

The NRQCD factorization formalism of Bodwin, Braaten, and Lepage presc ribes how to write quarkonium production rates as a sum of products of short-distance coefficients times nonperturbative long-distance NRQCD matrix elements. We present a calculation of the inclusive cross sect ion for hadronic psi production within the framework of the factorizat ion formalism. Our method applies to the case in which the helicity of the psi is not measured. In addition to the well-known color-singlet production mechanisms, there are equally important mechanisms in which the c (c) over bar pair that forms the J/psi is initially produced in a color-octet state, in either a S-3(1), S-1(0), P-3(0), or P-3(2) an gular-momentum configuration. In our presentation, we faithfully follo w the ''matching'' procedure, thereby shedding light on the NRQCD fact orization formalism. We determine the short-distance coefficients appe aring in the factorization formula, and we point out how one may syste matically include relativistic corrections in these calculations.