Abstract
We present analytical results both in momentum and position space for the massless correlators of the vector and scalar currents to order α s 4 as well as for the tensor currents to order α s 3 . The evolution equations for the correlators together with all relevant anomalous dimensions are discussed in detail. As an application we present explicit conversion formulas relating the MS ¯ -renormalized vector, scalar and tensor currents to their counterparts renormalized in the X-space renormalization scheme more appropriate for lattice calculations.
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