Do phase-shift analyses and nucleon-nucleon potential models yield the wrong3Pjphase shifts at low energies?

The ${}^4{P}_J$ waves in nucleon-deuteron scattering were analyzed using proton-deuteron and neutron-deuteron data at $E_N$=3 MeV. New sets of nucleon-nucleon ${}^3{P}_j$ phase shifts were obtained that may lead to a better understanding of the long-standing $A_y\left(\theta \right)$ puzzle in nucleon-deuteron elastic scattering. However, these sets of ${}^3{P}_j$ phase shifts are quite different from the ones determined from both global phase-shift analyses of nucleon-nucleon data and nucleon-nucleon potential models.