Duality in N = 2 nonlinear sigma-models

We consider N = 2 supersymmetric nonlinear sigma-models in two dimensions d efined in terms of the nonminimal scalar multiplet. We compute in superspac e the one-loop beta function and show that the classical duality between th ese models and the standard ones defined in terms of chiral superfields is maintained at the quantum one-loop level. Our result provides an explicit a pplication of the recently proposed quantization of the nonminimal scalar m ultiplet via the Batalin-Vilkovisky procedure.