Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-05-14
Nucl.Phys.B789:245-257,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 3 figures. References added. Accepted by NPB
Scientific paper
10.1016/j.nuclphysb.2007.08.004
We propose an interesting model of neutrino masses to realize leptogenesis and dark matter at the TeV scale. A real scalar is introduced to naturally realize the Majorana masses of the right-handed neutrinos. We also include a new Higgs doublet that contributes to the dark matter of the universe. The neutrino masses come from the vacuum expectation value of the triplet Higgs scalar. The right-handed neutrinos are not constrained by the neutrino masses and hence they could generate leptogenesis at the TeV scale without subscribing to resonant leptogenesis. In our model, all new particles could be observable at the forthcoming Large Hardon Collider or the proposed future International Linear Collider.
Gu Pei-Hong
Sarkar Utpal
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