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

2006/09/30 by Mu–Chun Chen, Mu-Chun Chen, K. T. Mahanthappa
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.75.015001

published as Phys.Rev.D75:015001,2007 · RevTeX; 17 pages; 7 figures; v2: Includes an extended discussion of leptogenesis; additional references added; typos corrected; the final version to appear in PRD

arxiv created 2006/12/07 · openalex publication_date 2007/01/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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)_S 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.

Citations

• Leptogenesis and a Jarlskog Invariant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Leptogenesis withoutCPviolation at low energies
• An Overview of Neutrino Masses and Mixing in SO(10) Models