Tasymmetry in the strong interaction at medium energies

We examine current intermediate-energy nucleon-nucleon data sensitive to $T$ asymmetry and conclude that of these data, some $\mathrm{np}$ polarization and asymmetry measurements give the best evidence that $T$ is good, despite the fact that these data have the largest errors of any of the data considered. This conclusion is reached using a one-boson-exchange potential due to Bryan and Gersten, wherein $T$ is violated at short distances. We argue that any short-range $T$-asymmetric model would probably lead to the same conclusion. We show that the current $N-N$ data admit the possibility of strong-interaction $T$ asymmetry, so long as it be of short range. For experimentalists who may search for strong-interaction $T$ violation in intermediate energy $N-N$ scattering, we suggest maximum errors for several measurements so that any such $T$ violation may not be missed.