Suppression of excited-state effects in lattice determination of nucleon   electromagnetic form factors
  We study the ability of a variety of fitting techniques to extract the ground state matrix elements of the vector current from ratios of nucleon three- and two-point functions that contain contaminations from excited states. Extending our high-statistics study of nucleon form factors, we are able to demonstrate that the treatment of excited-state contributions in conjunction with approaching the physical pion mass has a significant impact on the $Q^2$-dependence of the form factors. 
G. M. von Hippel, S. Capitani, D. Djukanovic, J. Hua, B. J\"ager, P.   Junnarkar, H. B. Meyer, T. D. Rae, H. Wittig
hep-lat