Measurements of the proton polarization in the 7 Li(3 He,p) 9 Be and 9 BeeHe,p) 11 B reactions and of the analyzing powers of the inverse reactions, initiated by polarized protons at the same ~~ energies, show significant differences which imply the failure of the polarization-analyzing power theorem and, "prima facie", of time-reversal invariance in these reactions.
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