A two-form formulation of the vector-tensor multiplet in central charge superspace

A two-from formulation for the N = 2 vector-tensor multiplet is constructed using superfield methods in central charge superspace. The N = 2 non-Abelian standard supergauge multiplet in central charge superspace is also discussed, as is with the associated Chern-Simons form. We give the constraints, solve the Bianchi identities and present the action for a theory of the vector-tensor multiplet coupled to the non-Abelian supergauge multiplet via the Chern-Simons form.