Nucleon electromagnetic and axial form factors with N=2 twisted mass fermions at the physical point
arXiv:1702.00984
Abstract
We present results for the nucleon electromagnetic and axial form factors using an N=2 twisted mass fermion ensemble with pion mass of about 131 MeV. We use multiple sink-source separations to identify excited state contamination. Dipole masses for the momentum dependence of the form factors are extracted and compared to experiment, as is the nucleon magnetic moment and charge and magnetic radii.
7 pages, 5 figures. Talk presented at the 34th annual International Symposium on Lattice Field Theory, 24-30 July 2016, University of Southampton, UK