The electric dipole moment of the electron

Physics goals of the next linear collider

“…While these couplings are zero at tree level in the Standard Model, the analog of the magnetic dipole coupling is expected to attain a value of order CY,/T due to corrections beyond leading order. On the other hand, the electric dipole term violates CP and is expected to be zero in the Standard Model through two loops [18]. Such a non-standard coupling necessarily involves a top spin flip, hence is proportional to mt.…”

Low scale seesaw, electron electric dipole moment, and leptogenesis in a model with spontaneousCPviolation

“…(For review, see, for example, Ref. [6].) For the electron, the SM prediction is d e ∼ 10 −38 e-cm, which is ten orders of magnitude smaller compared to the current bound d e < 1.6 × 10 −27 e-cm at 90% confidence level [7].…”

Chromoelectric dipole moments of quarks in MSSM extensions

“…Such sources can also induce electric dipole moment in elementary particles which can be significantly larger than those expected in the standard model [1,2]. In this work we are specifically interested in the electric dipole moment (EDM) of the quarks arising from the chromoelectric dipole operator.…”

“…New sources of CP violation beyond those that exist in the Standard Model are needed to explain baryogenesis and are also worthy of study in their own right as possible probes of beyond the standard model physics (for reviews see e.g., [1,2,3,4]). Such sources can also induce electric dipole moment in elementary particles which can be significantly larger than those expected in the standard model [1,2].…”