Mirror Dirac leptogenesis

We consider a mirror world scenario, in which light Dirac neutrinos are generated from a seesaw mechanism and leptogenesis occurs at high scale without violating lepton number. After leptogenesis, the conservation laws of the theory imply the visible baryon-minus-lepton asymmetry to be equal to the...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2020-03, Vol.2020 (3), p.36-36
Main Authors: Earl, K., Fong, C.S., Gregoire, T., Tonero, A.
Format: Article
Language:English
Subjects:
Asymmetry
Baryons
Conservation laws
Flavor (particle physics)
Leptons
Neutrinos
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Summary:We consider a mirror world scenario, in which light Dirac neutrinos are generated from a seesaw mechanism and leptogenesis occurs at high scale without violating lepton number. After leptogenesis, the conservation laws of the theory imply the visible baryon-minus-lepton asymmetry to be equal to the mirror baryon-minus-lepton asymmetry. We extend previous work by presenting a detailed study of this Dirac leptogenesis mechanism by constructing the full set of Boltzmann Equations (BEs) for both cases of unflavored and flavored regimes. We show that Z2 breaking and lepton/mirror lepton flavor effects can be exploited to enhance the final baryon-minus-lepton asymmetry in our world by several orders of magnitude.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2020/03/036