  We study N=2 supersymmetric U(1) gauge theory in the noncommutative harmonic
superspace with nonanticommutative fermionic coordinates. We examine the gauge
transformation which preserves the Wess-Zumino gauge by harmonic expansions of
component fields. The gauge transformation is shown to depend on the
deformation parameters and the anti-holomorphic scalar field. We compute the
action explicitly up to the third order in component fields and discuss the
field redefinitions so that the component fields transform canonically.

High Energy Physics - Theory