Heavy Majorana neutrinos and baryogenesis

被引:216
作者
Pilaftsis, A [1 ]
机构
[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 1999年 / 14卷 / 12期
关键词
D O I
10.1142/S0217751X99000932
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The scenario of baryogenesis through leptogenesis is reviewed in models involving heavy Majorana neutrinos. The various mechanisms of CP violation occurring in the out-of-equilibrium lepton-number-violating decays of heavy Majorana neutrinos are studied within a resummation approach to unstable-particle mixing. It is explicitly demonstrated how the resummation approach preserves crucial field-theoretic properties such as unitarity and CPT invariance. Predictions of representative scenarios are presented after solving numerically the Boltzmann equations describing the thermodynamic evolution of the Universe. The phenomenological consequences of loop effects of heavy Majorana neutrinos on low-energy observables, such as lepton-flavor and/or lepton-number nonconservation in tau and Z-boson decays and electron electric dipole moment, are discussed.
引用
收藏
页码:1811 / 1857
页数:47
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