(4,0) SUPER-BELTRAMI PARAMETRIZATION AND SUPER-OPERATOR-PRODUCT EXPANSIONS

The superconformal structure of the (4,0) supergeometry of two-dimensi onal harmonic superspace is characterized by the super-Beltrami differ entials. The BRST algebra including super-Beltrami variables and matte r superfields of arbitrary U(1) charges is constructed. The (4,0) loca lly supersymmetric matter action in the super-Beltrami parametrization is constructed and the super-stress-energy tensors are obtained. Furt hermore, the (4,0) superconformal anomaly is given and the super-opera tor-product expansion of the (4,0) super-stress-energy tensor J(Z) is derived.