A new, direct link between the baryon asymmetry and neutrino masses

被引：22

作者：

Frigerio, Michele ^{[1
,2
]}

Hosteins, Pierre ^{[3
]}

Lavignac, Stephane ^{[1
,2
]}

Romanino, Andrea ^{[4
,5
]}

机构：

[1] CEA Saclay, CEA, Lab Direct Sci Matiere, Inst Phys Theor, F-91191 Gif Sur Yvette, France

[2] CEA Saclay, Inst Phys Theor, CNRS, URA 2306, F-91191 Gif Sur Yvette, France

[3] Univ Patras, Dept Phys, GR-26500 Patras, Greece

[4] Ist Nazl Fis Nucl, I-34013 Trieste, Italy

[5] SISSA, I-34013 Trieste, Italy

来源：

NUCLEAR PHYSICS B | 2009年 / 806卷 / 1-2期

关键词：

CP-VIOLATION; LEPTOGENESIS; SUPERSYMMETRY; BARYOGENESIS; GRAVITINO; SEESAW; BRIDGE; QUARK; MODEL;

D O I：

10.1016/j.nuclphysb.2008.07.015

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We point out that, in a class of SO(10) models with matter fields in 16 and 10 representations and type II realization of the seesaw mechanism, the light neutrino masses and the CP asymmetry needed for leptogenesis are controlled by one and the same set of couplings. The generated baryon asymmetry then directly depends on the low-energy neutrino parameters, with no unknown seesaw-scale flavour parameters involved; in particular, the necessary CP violation is provided by the CP-violating phases of the lepton mixing matrix. We compute the CP asymmetry in triplet decays for this scenario and show that it can lead to successful leptogenesis. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：84 / 102

页数：19

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