N*(1535) electroproduction at high Q2
  A covariant spectator quark model is applied to study the gamma N -> N*(1535) reaction in the large Q2 region. Starting from the relation between the nucleon and N*(1535) systems, the N*(1535) valence quark wave function is determined without the addition of any parameters. The model is then used to calculate the gamma N -> N*(1535) transition form factors. A very interesting, useful relation between the A12 and S12 helicity amplitudes for Q2 > GeV^2, is also derived. 
G. Ramalho, M.T. Pena and K. Tsushima
hep-ph hep-ex hep-lat nucl-ex nucl-th