Leptogenesis from additional Higgs doublets

被引：17

作者：

Garbrecht, Bjoern ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Teilchenphys & Kosmol, D-52056 Aachen, Germany

来源：

PHYSICAL REVIEW D | 2012年 / 85卷 / 12期

关键词：

CP VIOLATION; BARYOGENESIS; ASYMMETRY; BARYON;

D O I：

10.1103/PhysRevD.85.123509

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Leptogenesis may be induced by the mixing of extra Higgs doublets with experimentally accessible masses. This mechanism relies on diagrammatic cuts that are kinematically forbidden in the vacuum but contribute at finite temperature. A resonant enhancement of the asymmetry occurs generically provided the dimensionless Yukawa and self-interactions are suppressed compared to those of the standard model Higgs field. This is in contrast to typical scenarios of resonant leptogenesis, where the asymmetry is enhanced by imposing a degeneracy of singlet neutrino masses.

引用

页数：6

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