We describe a lattice approach for directly computing momentum derivatives of
nucleon matrix elements using the Rome method, which we apply to obtain the
isovector magnetic moment and Dirac radius. We present preliminary results
calculated at the physical pion mass using a 2HEX-smeared Wilson-clover action.
For removing the effects of excited-state contamination, the calculations were
done at three source-sink separations and the summation method was used. Read More