RENORMALIZATION OF HEAVY-QUARK EFFECTIVE-FIELD THEORY

The construction of heavy quark effective field theory HQEFT is extend ed to arbitrary order in both expansion parameters alpha(s) and 1/m(q) . Matching conditions are discussed for the general case, and it is ve rified that this approach correctly reproduces the infrared behavior o f full QCD. Choosing a renormalization scheme in the full theory fixes the renormalization scheme in the effective theory except for the sca le of the heavy quark field. Explicit formulas are given for the effec tive Lagrangian, and one-loop matching renormalization constants are c omputed for the operators of order 1/m(q). Finally, the multiparticle sector of HQEFT is considered.