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Título : Neutrino mass, Dark Matter and Baryon Asymmetry via TeV-Scale Physics without Fine-Tuning
Autor : Aoki, Mayumi; Kanemura, Shinya; Seto, Osamu
Palabras clave : High Energy Physics - Phenomenology
Fecha de publicación : 2-jul-2008
Citación : arXiv:0807.0361v1 [hep-ph]
Serie : IFT-UAM/CSIC-08-40
UT-HET 011
Resumen: We propose an extended version of the standard model, in which neutrino oscillation, dark matter, and baryon asymmetry of the Universe can be simultaneously explained by the TeV-scale physics without assuming unnatural hierarchy among the mass scales. Tiny neutrino masses are generated at the three loop level due to the exact Z_2 symmetry, by which stability of the dark matter candidate is guaranteed. The extra Higgs doublet is required not only for the tiny neutrino masses but also for successful electroweak baryogenesis. The model provides discriminative predictions especially in Higgs phenomenology, so that it is testable at current and future collider experiments.
Descripción : PACS numbers: 14.60.Pq, 14.60.St, 14.80.Cp, 12.60.Fr.-- 4 pages including 3 figures.
URI : http://hdl.handle.net/10261/5607
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