Resurrection of grand unified theory baryogenesis

被引：28

作者：

Fukugita, M ^{[1
]}

Yanagida, T

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[2] Univ Tokyo, Dept Phys, Tokyo 113, Japan

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.89.131602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A "new" scenario is proposed for baryogenesis. We show that the delayed decay of colored Higgs particles in grand unified theories may generate an excess baryon number of the empirically desired amount, if the mass of the heaviest neutrino is in the range 0.02 eV<m(nu3)<0.8 eV, provided that neutrinos are of the Majorana type. The scenario accommodates the case of degenerate neutrino masses, in contrast to the usual leptogenesis scenario, which does not work when three neutrino masses are degenerate.

引用

页码：131602 / 131602

页数：3

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