TY - JOUR AU - E. Meyer AU - John Bohn AB - The observation of an electron electric-dipole moment (EEDM) would have major ramifications for the standard model of physics. Polar molecules offer a near-ideal laboratory for such searches due to the large effective electric field ( F eff ), on order of tens of GV/cm that can be easily oriented in the laboratory frame. We present an improved method for simply and accurately determining F eff, in a heavy polar molecule, allowing for a quick determination of candidates for an EEDM experiment. We apply this method to ThO and Th F + , both of which possess metastable 3 Δ electronic states. The values of F eff in ThO and ThF+ are estimated to be 104GV∕ cm and 90 GV ∕ cm , respectively, making them two of the best known candidates for the EEDM search. BT - Physical Review A DA - 2008-07 DO - 10.1103/PhysRevA.78.010502 N2 - The observation of an electron electric-dipole moment (EEDM) would have major ramifications for the standard model of physics. Polar molecules offer a near-ideal laboratory for such searches due to the large effective electric field ( F eff ), on order of tens of GV/cm that can be easily oriented in the laboratory frame. We present an improved method for simply and accurately determining F eff, in a heavy polar molecule, allowing for a quick determination of candidates for an EEDM experiment. We apply this method to ThO and Th F + , both of which possess metastable 3 Δ electronic states. The values of F eff in ThO and ThF+ are estimated to be 104GV∕ cm and 90 GV ∕ cm , respectively, making them two of the best known candidates for the EEDM search. PY - 2008 EP - 010502(R) T2 - Physical Review A TI - Prospects for an electron electric-dipole moment search in metastable ThO and ThF+ VL - 78 SN - 1050-2947 ER -