Effective range parametrization of phase shifts for p-³He elastic scattering between 0 and 12 MeV

We have used a modified effective range expansion to parametrize the phase shifts for p-³He elastic scattering over the energy range of 0 to 12 meV. Energy-dependent phase shifts were determined by fitting a database consisting of 1085 measurements, including 68 new measurements of the spin correlation coefficients A_yy, A_xx, A_zz, Z_xz, and A_zx. The addition of the new second order polarization observables has made it possible to uniquely determine the low energy phase shifts. The final fit has a χ² per degree of freedom of 0.966, corresponding to a confidence level of 0.778. The global phase shift uncertainties obtained in the present work represent a significant improvement over the results of previous analyses.