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Optical-Model Description of Time-Reversal Violation

V. Hnizdo·C. R. Gould
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Abstract

A time-reversal-violating spin-correlation coefficient in the total cross section for polarized neutrons incident on a tensor rank-2 polarized target is calculated by assuming a time-reversal-noninvariant, parity-conserving ``five-fold" interaction in the neutron-nucleus optical potential. Results are presented for the system $n + {^{165}{\rm Ho}}$ for neutron incident energies covering the range 1--20 MeV. From existing experimental bounds, a strength of $2 \pm 10$ keV is deduced for the real and imaginary parts of the five-fold term, which implies an upper bound of order $10^{-4}$ on the relative $T$-odd strength when compared to the central real optical potential.

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V. Hnizdo, C. R. Gould. 1993-11-22. Optical-Model Description of Time-Reversal Violation. https://doi.org/10.1103/physrevc.49.r612

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