Abstract
All current experiments searching for an electron electric dipole moment (EDM) are performed with atoms and diatomic molecules. Motivated by significant recent progress in searches for an EDM-type signal in diatomic molecules with an uncompensated electron spin, we provide an estimate for the expected signal in the Standard Model due to the Cabibbo-Kobayashi-Maskawa (CKM) phase. We find that the main contribution originates from the effective electron-nucleon operator , induced by a combination of weak and electromagnetic interactions at , and not by the CKM-induced electron EDM itself. When the resulting atomic -odd mixing is interpreted as an equivalent electron EDM, this estimate leads to the benchmark .
- Received 11 December 2013
DOI:https://doi.org/10.1103/PhysRevD.89.056006
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