Electric dipole moments of p, n, 2H+, and 3He2+

Permanent electric dipole moments (EDMs) are signatures of time-reversal, or equivalently, CP violation. With novel techniques developed for storage rings making EDM measurements of charged particles possible, we review current theoretical calculations of p, n, , and , and show how these experiments in combination could offer a good starting point to constrain the landscape of hadronic CP violation.