Nuclear Electric Dipole Moment of 3He

Understand

A permanent electric dipole moment (EDM) of a physical system requires time-reversal (T) and parity (P) violation.

• Experimental programs are currently pushing the limits on EDMs in atoms, nuclei, and the neutron to regimes of fundamental theoretical interest.
• Here we calculate the magnitude of the PT-violating EDM of 3He and the expected sensitivity of such a measurement to the underlying PT-violating interactions.
• Assuming that the coupling constants are of comparable magnitude for pi-, rho-, and omega-exchanges, we find that the pion-exchange contribution dominates.