فهرست نشریات علمی دسترسی آزاد ایران

In addition to optimal conditions, invariant laws of Lorentz, parity and time reversal are imposed to find the relation between observables (spin rotation parameters) and bilinear combination of helicity amplitudes in pion-proton elastic scattering at 6.0 GeV/c. By normalizing the differential cross-section to unity, the magnitudes of helicity amplitudes and the angle between them are determined. Planar amplitudes are found in terms of the helicity amplitudes and the angle between momentum vector and quantization direction in the reaction plane.