Calculable cosmological CP violation and resonant leptogenesis

Calculable cosmological CP violation and resonant leptogenesis Within the extension of MSSM by two right-handed neutrinos, with tree level mass degeneracy, we address the issue of leptogenesis. Investigating the quantum corrections in detail, we show that the lepton asymmetry is induced at the one-loop level and a decisive role is played by the tau lepton Yukawa coupling. On a concrete and predictive neutrino model, which enables us to predict the CP violating δ phase and relate it to the cosmological CP asymmetry, we demonstrate that the needed amount of the baryon asymmetry is generated via the resonant leptogenesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Calculable cosmological CP violation and resonant leptogenesis

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Calculable cosmological CP violation and resonant leptogenesis

Abstract

Within the extension of MSSM by two right-handed neutrinos, with tree level mass degeneracy, we address the issue of leptogenesis. Investigating the quantum corrections in detail, we show that the lepton asymmetry is induced at the one-loop level and a decisive role is played by the tau lepton Yukawa coupling. On a concrete and predictive neutrino model, which enables us to predict the CP violating δ phase and relate it to the cosmological CP asymmetry, we demonstrate that the needed amount of the baryon asymmetry is generated via the resonant leptogenesis.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.96.015015
Publisher site
See Article on Publisher Site

Abstract

Within the extension of MSSM by two right-handed neutrinos, with tree level mass degeneracy, we address the issue of leptogenesis. Investigating the quantum corrections in detail, we show that the lepton asymmetry is induced at the one-loop level and a decisive role is played by the tau lepton Yukawa coupling. On a concrete and predictive neutrino model, which enables us to predict the CP violating δ phase and relate it to the cosmological CP asymmetry, we demonstrate that the needed amount of the baryon asymmetry is generated via the resonant leptogenesis.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 1, 2017

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