Nucleon electromagnetic and axial form factors with Nf=2 twisted mass fermions at the physical point

Abstract

We present results for the nucleon electromagnetic and axial form factors using an Nf=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. © Copyright owned by the author(s).