scholarly journals Cancellation mechanism for the electron electric dipole moment connected with the baryon asymmetry of the Universe

2020 ◽  
Vol 101 (1) ◽  
Author(s):  
Kaori Fuyuto ◽  
Wei-Shu Hou ◽  
Eibun Senaha
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Baryon Asymmetry ◽  
Electron Electric Dipole Moment ◽  
The Universe

scholarly journals OBSERVABLE ELECTRON EDM AND LEPTOGENESIS

2007 ◽  
Vol 22 (32) ◽  
pp. 6253-6278 ◽  
Author(s):  
F. R. JOAQUIM ◽  
I. MASINA ◽  
A. RIOTTO
Keyword(s):  
Dipole Moment ◽  
Electric Dipole ◽  
Upper Bound ◽  
Laboratory Experiments ◽  
Baryon Asymmetry ◽  
Yukawa Couplings ◽  
Electron Electric Dipole Moment ◽  
Model Independent ◽  
Electron Edm ◽  
The Universe

In the context of the minimal supersymmetric seesaw model, the CP-violating neutrino Yukawa couplings might induce an electron electric dipole moment (EDM). The same interactions may also be responsible for the generation of the observed baryon asymmetry of the universe via leptogenesis. In the framework of mSUGRA, we identify in a model-independent way those patterns within the seesaw models which predict, barring unnatural cancelations, an electron EDM at a level probed by planned laboratory experiments and show that negative searches on τ→eγ decay may provide the strongest upper bound on the electron EDM. We also conclude that a possible future detection of the electron EDM is incompatible with thermal leptogenesis, even when flavor effects are accounted for.

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