Neutron Diffraction Test on Spin-Dependent Short Range Interaction

The direct constraint on the parameters of short range pseudomagnetic interaction of free neutron with matter is obtained from the recent test experiment on a search for neutron EDM by crystal-diffraction method [1]. It is shown that this constraint on a product of scalar to pseudo-scalar coupling constants g(S)g(P) is better than that of any other method for the range lambda < 10(-5) cm.