# Computing the nucleon charge and axial radii directly at Q 2 = 0 in lattice QCD

@article{Hasan2018ComputingTN, title={Computing the nucleon charge and axial radii directly at Q 2 = 0 in lattice QCD}, author={N. Hasan and J. Green and S. Meinel and M. Engelhardt and S. Krieg and J. Negele and A. Pochinsky and S. Syritsyn}, journal={Physical Review D}, year={2018}, volume={97}, pages={034504} }

We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattice directly at $Q^2=0$. This is based on the Rome method for computing momentum derivatives of quark propagators. We apply this procedure to extract the nucleon isovector magnetic moment and charge radius as well as the isovector induced pseudoscalar form factor at $Q^2=0$ and the axial radius. For comparison, we also determine these quantities with the traditional approach of computing the… CONTINUE READING

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