ONE FERMION-LOOP CORRECTION AND SUPERSYMMETRY IN THE SUPERSYMMETRIC U-MODEL WITH WESS-ZUMINO TERMS

It is shown that the local counterterms which simultaneously restore local Lorentz and gauge invariance of the σ-model do not satisfy the criteria of (2, 0) supersymmetry. But local counterterms and the non-local part of one-loop effective action together are invariant under the (2, 0) supersymmetry transformation.