Vector Analyzing Power ind−pScattering at 45.4 MeV and the Nucleon-Nucleon Interaction

The deuteron vector analyzing power in deuteron-proton elastic scattering has been measured at $E_d=45.4\mathrm{}$ MeV. Our results, when compared with recent three-body calculations, suggest the possibility of deducing information on the $n-p$ phase-shift parameters which has not been available from $n-p$ scattering itself.