We deduce constraints on time-reversal-noninvariant (TRNI), parity-conserving (PC) hadronic interactions from nucleon, nuclear, and atomic electric dipole moment (EDM) limits. Such interactions generate EDM’s through weak radiative corrections. We consider long-range mechanisms, i.e., those mediated by meson exchanges in contrast with short-range two-loop mechanisms. We find that the ratio of typical TRNI, PC nuclear matrix elements to those of the strong interaction are ≲${10}^{\mathrm{-}5}$, a limit about 2 orders of magntiude more stringent than those from direct detailed balance studies of such interactions. This corresponds to a bound of ‖g${\mathrm{¯}}_{\mathrm{\rho }}$‖≲${10}^{\mathrm{-}3}$, where g${\mathrm{¯}}_{\mathrm{\rho }}$ is a TRNI PC ρNN coupling.

• Received 3 March 1994

DOI:https://doi.org/10.1103/PhysRevD.50.3422