$\eta -{\eta }^{\prime }$ Photoproduction and the Axial Isoscalar Neutral Current Coupling

J. Bernabéu, G. A. González-Sprinberg, J. Vidal

We show that coherent $\eta$ and $\etap$ photoproduction by means of the Primakoff Effect on the proton depends on the strange component of the neutral axial current coupling. We cons…