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Superfields provide a compact description of supersymmetry representations.Loop corrections with superfield formalism are simpler and much more manageablethan calculation in terms of component fields. In this paper we calculate thecontribution of the Kaluza-Klein states, associated with extra dimensions, tothe renormalization group beta function. These Kaluza-Klein particles circulatein the virtual loop, hence affecting the overall corrections at any order. Weobtain the one-loop correction, which checks with the result previouslyobtained using the more laborious component field method. In addition, wecalculate the two-loop correction coming from chiral KK states.Comment: 38 pages, 7 figures. Added reference

Superfield calculation of loop contributions in extra dimensional theories