Baryogenesis and degenerate neutrinos

被引：24

作者：

Chun, EJ ^{[1
]}

Kang, SK

机构：

[1] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[2] Korea Inst Adv Study, Seoul 130012, South Korea

来源：

PHYSICAL REVIEW D | 2001年 / 63卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.63.097902

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We bring the theoretical issue of whether two important cosmological demands, baryon asymmetry and degenerate neutrinos as hot dark matter, can be compatible in the context of the seesaw mechanism. While the canonical seesaw model with right-handed neutrinos is disregarded in this aspect, the triplet seesaw model is able to reconcile leptogenesis with almost degenerate Majorana neutrinos but with some unnatural arrangements of parameters. To remedy this, we propose a hybrid seesaw model with a heavy Higgs triplet and right-handed neutrinos.

引用

页数：4

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