Quasifree polarization-transfer measurements in the (p→,n→) reaction at 495 MeV

Results from a complete set of polarization-transfer observables for quasifree (p→,n→) scattering at 495 MeV are reported. Measurements were carried out on ${\mathrm{CD}}_2$, carbon, and calcium targets at a laboratory scattering angle of 18° using the new neutron time-of-flight facility at LAMPF. The ratio of spin-longitudinal to spin-transverse responses at a momentum transfer of approximately 1.72 ${\mathrm{fm}}^{\mathrm{-}1}$ is extracted from the data and compared to distorted-wave calculations incorporating a random-phase approximation description of the nuclear response. No enhancement is observed in the experimental ratio.