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John von Neumann Institut NIC/DESY Zeuthen, 15738 Zeuthen Germany,Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, GermanyWe consider the renormalisation of composite quark-antiquarkoperators with one and two latticecovariantderivativesrelatedto the lowestmomentsofgeneralisedpartondistributions(GPDs) andmeson distribution amplitudes (DAs). Their matrix elements are calculated in one-loop latticeperturbation theory for non-zero momentum transfer. Usingclover and overlap fermions wepresent the resulting matrices of mixing and renormalisation factors. For overlap fermions weexplicitly check the absence of mixing with lower-dimensional operators of different chirality inparticularrepresentationsof the hypercubicgroup. This featurefavours the use of chiral fermions.XXIVth International Symposium on Lattice Field TheoryJuly 23-28, 2006Tucson, Arizona, USA

One-loop renormalisation of lattice QCD operators for non-forward matrix elements: from clover to overlap fermions