CP Violating Baryon Oscillations

Abstract

We enumerate the conditions necessary for $CP$ violation to be manifest in $n$-$\bar{n}$ oscillations, and build a simple model that can give rise to such effects. We discuss a possible connection between neutron oscillations and dark matter, provided the mass of the latter lies between $m_p-m_e$ and $m_p+m_e$. We apply our results to a possible baryogenesis scenario involving $CP$ violation in the oscillations of the ${\Xi }^0$.

Comments: 8 pages, 2 figures. v2: version to appear in PRD