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[en] We present results on the electromagnetic and axial nucleon form factors using two degenerate flavors of twisted mass fermions on lattices of spatial size 2.1 fm and 2.7 fm and a lattice spacing of about 0.09 fm. We consider pion masses in the range of 260-470MeV.We chirally extrapolate results on the nucleon axial charge, the isovector Dirac and Pauli root mean squared radii and magnetic moment to the physical point and compare to experiment. (orig.)
Source
Oct 2009; 7 p; LAT2009: 27. international symposium on lattice field theory; Beijing (China); 26-31 Jul 2009; ISSN 0418-9833; 