The effect of $T$-invariance violation in scattering of polarized $^3$He nuclei on tensor-polarized deuterons

Abstract

In the interaction of a transversely polarized nuclear beam with a tensor-polarized deuteron target, a nonzero value of the component of the total cross section of the process corresponding to this combination of polarizations is an unambiguous signal of $T$-invariance violation while $P$-parity is preserved. The method developed earlier for calculating this component of the total cross section for $pd$ scattering based on the Glauber theory has been generalized by us to the case of $^3$He$d$ scattering, and its energy dependence in the range of beam energies 0.1--1 GeV/nucleon has been calculated. It is found that in $^3$He$d$ collisions, in contrast to $pd$ scattering, the contribution of only one type of $T$-violating nucleon-nucleon forces dominates, which is essential for extraction of the unknown constant of this interaction from the corresponding data.