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.
引用
收藏
页码:379 / 387
页数:8
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