Low Scale Seesaw, Electron EDM and Leptogenesis in a Model with Spontaneous CP Violation

Abstract

Strong correlations between leptogenesis and low energy CP violating leptonic processes have been shown by us to exist in the minimal left-right symmetric model with spontaneous CP violation. In this note, we investigate the implications of this model for the electric dipole moment of the electron. With an additional broken U(1)_H symmetry, the seesaw scale can be lowered to close to the electroweak scale. This additional symmetry also makes the connection between CP violation in quark sector to that in the lepton sector possible.

RevTeX; 17 pages; 7 figures; v2: Includes an extended discussion of leptogenesis; additional references added; typos corrected; the final version to appear in PRD

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