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Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses
被引:0
作者:
D. Suematsu
机构:
[1] Kanazawa University,Institute for Theoretical Physics
来源:
The European Physical Journal C
|
2008年
/
56卷
关键词:
Dark Matter;
Yukawa Coupling;
Neutrino Masse;
Cold Dark Matter;
Lepton Number;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
We propose a unified explanation for the origin of dark matter and baryon number asymmetry on the basis of a non-supersymmetric model for the neutrino masses. Neutrino masses are generated in two distinct ways, that is, a tree-level seesaw mechanism with a single right-handed neutrino, and one-loop radiative effects by a new additional doublet scalar. A spontaneously broken U(1)′ brings about a Z2 symmetry which restricts couplings of this new scalar and controls the neutrino masses. It also guarantees the stability of a CDM candidate. We examine two possible candidates for the CDM. We also show that the decay of a heavy right-handed neutrino related to the seesaw mechanism can generate baryon number asymmetry through leptogenesis.
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页码:379 / 387
页数:8
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