Model of TeV scale physics for neutrino mass, dark matter, and baryon asymmetry and its phenomenology
- Department of Physics, Tohoku University, Aramaki, Aoba, Sendai, Miyagi 980-8578 (Japan)
- Department of Physics, University of Toyama, 3190 Gofuku, Toyama 930-8555 (Japan)
- William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
We discuss some details of the model proposed [M. Aoki, S. Kanemura, and O. Seto, Phys. Rev. Lett. 102, 051805 (2009)], in which neutrino oscillation, dark matter, and baryon asymmetry of the Universe would be simultaneously explained by the TeV-scale physics without introducing very high mass scales. An exact discrete Z{sub 2} symmetry is introduced, under which new particle contents (a real singlet scalar field, a pair of charged singlet scalar fields, and TeV-scale right-handed neutrinos) are assigned to have odd quantum number, whereas ordinary gauge fields, quarks and leptons, and two Higgs doublets are even. Tiny neutrino masses are generated at the three-loop level due to the exact Z{sub 2} symmetry, by which stability of the dark matter candidate is also guaranteed. The extra Higgs doublet is required not only for the tiny neutrino masses but also for successful electroweak baryogenesis. We discuss phenomenological properties of the model, and find that there are successful scenarios in which the above three problems are solved simultaneously under the constraint from current experimental data. We then discuss predictions in such scenarios at ongoing and future experiments. It turns out that the model provides discriminative predictions especially in Higgs physics and dark matter physics, so that it is testable in the near future.
- OSTI ID:
- 21322326
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 80, Issue 3; Other Information: DOI: 10.1103/PhysRevD.80.033007; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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