Multiplicative Conservation of Baryon Number and Baryogenesis
arXiv:0710.1102 · doi:10.1016/j.physletb.2008.02.024
Abstract
In the canonical seesaw mechanism of neutrino mass, lepton number is only multiplicatively conserved, which enables the important phenomenon of leptogenesis to occur, as an attractive explanation of the present baryon asymmetry of the Universe. A parallel possibility, hitherto unrecognized, also holds for baryon number and baryogenesis. This new idea is shown to be naturally realized in the context of a known supersymmetric string-inspired extension of the Standard Model, based on E(6) particle content, and having an extra U(1)_N gauge symmetry. Within this framework, two-loop radiative neutrino masses are also possible, together with a new form of very long-lived matter.
9 pages, 4 figures, 3 tables
References in corpus (7)
- Leptogenesis as the origin of matter
- Theory and Phenomenology of an Exceptional Supersymmetric Standard Model
- Exceptional Supersymmetric Standard Model
- Neutrino Masses in an Extended Gauge Model with E_6 Particle Content
- Allowable Low-Energy E_6 Subgroups from Leptogenesis
- Efficacious Extra U(1) Factor for the Supersymmetric Standard Model
- Revelations of the E_6/U(1)_N Model: Two-Loop Neutrino Mass and Dark Matter
Cited by in corpus (6)
- Supersymmetric U(1) Gauge Realization of the Dark Scalar Doublet Model of Radiative Neutrino Mass
- Utility of a Special Second Scalar Doublet
- Variants of the Dark Left-Right Gauge Model: Neutrinos and Scotinos
- Axionic Extensions of the Supersymmetric Standard Model
- Baryon asymmetry generation in the E6CHM
- Common Origin of (-)^L, (-)^{3B}, and Strong CP Conservation