Enhancement of the near-side component in quasiadiabatic calculations of theZn66(d,p)67Zn reaction

Measurements of the spin dependence of large l, j=l-1/2, transfer reactions at medium energies provide a stringent test of three-body reaction models. We report measurements of the cross section (dσ/dΩ), vector (${\mathit{A}}_{\mathit{y}}$) and tensor (${\mathit{A}}_{\mathit{y}\mathit{y}}$) analyzing powers, and outgoing proton polarization (p) angular distributions (${\mathrm{\theta }}_{\mathrm{c}.\mathrm{m}.\mathrm{}}$=6.9°–82.3°) for the l=3, ${\mathit{j}}^{\mathrm{\pi }}$=5/$2^{\mathrm{-}}$ ground-state transition in ${}_{}{}^{66}{}_{}{}^{}\mathrm{Zn}$(d,p${)}^{67}$Zn measured with 88.2-MeV deuterons. Adiabatic model calculations fail to describe either interference oscillations in the data or departures from the simple theoretical relationships, 1+3p+2${\mathit{A}}_{\mathit{y}\mathit{y}}$=0 and 2+${\mathit{A}}_{\mathit{y}\mathit{y}}$+3${\mathit{A}}_{\mathit{y}}$=0, that are expected to hold for a far-side–dominated reaction. The quasiadiabatic model, in which the center-of-mass energy in breakup configurations is not constrained to be degenerate with the elastic channel, is able to reproduce qualitatively these features of the data.