We have measured the in-plane polarization transfer coefficients for the Li6(p,p) reaction using a longitudinally polarized beam at 65 MeV. A microscopic distorted-wave Born-approximation analysis with the M3Y interaction has been performed for the excitation to the first 0+ state (T=1). The isovector tensor force VT and the isovector spin-orbit force VLS have been adjusted in order to reproduce the experimental differential cross sections, depolarization parameters, and in-plane polarization transfer coefficients. This analysis suggests that the high-momentum components of VT should be substantially reduced from the M3Y interaction and VLS needs to be more attractive.
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