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.
@article{arxiv.2110.01310,
title = {Investigating the low moments of the nucleon structure functions in lattice QCD},
author = {K. U. Can and A. Hannaford-Gunn and E. Sankey and R. Horsley and Y. Nakamura and H. Perlt and P. E. L. Rakow and G. Schierholz and H. Stuben and R. D. Young and J. M. Zanotti},
journal= {arXiv preprint arXiv:2110.01310},
year = {2021}
}
Comments
7 pages, 3 figures. Contribution to the 38th International Symposium on Lattice Field Theory, LATTICE2021 26th-30th July, 2021 Zoom/Gather@Massachusetts Institute of Technology