Investigating the low moments of the nucleon structure functions in lattice QCD

We highlight QCDSF/UKQCD Collaboration's recent developments on computing the Compton amplitude directly via an implementation of the second order Feynman-Hellmann theorem. As an application, we compute the nucleon Compton tensor across a range of photon virtuality at an unphysical quark mass. This enables us to study the Q2 dependence of the low moments of the nucleon structure functions in a lattice calculation for the first time. We present some selected results for the moments of the F1, F2 and FL structure functions and discuss their implications