Affleck-Dine (pseudo)-Dirac neutrinogenesis

被引：0

作者：

Abel, Steven ^{[1
]}

Page, Veronique ^{[1
]}

机构：

[1] Univ Durham, Ctr Particle Theory, Durham DH1 3LE, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2006年 / 05期

关键词：

cosmology of theories beyond the SM; baryogenesis;

D O I：

暂无

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 consider the Affleck-Dine mechanism for leptogenesis in the minimal MSSM with Dirac or pseudo-Dirac neutrinos. The rolling of scalars along D-flat directions generates a left-right asymmetry in the sneutrino sector, only the left part of which is transferred to a baryon asymmetry via sphaleron transitions. In the pure Dirac case the baryon asymmetry of the Universe is thus mirrored by an equal and opposite asymmetry in the leptons. The mechanism is also found to work when the neutrinos are pseudo-Dirac. No additional field needs to be added to the MSSM other than the right-handed neutrino.

引用

页数：14

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