Baryon asymmetry of the Universe in the νMSM

被引:92
作者
Canetti, Laurent [1 ]
Shaposhnikov, Mikhail [1 ]
机构
[1] Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland
基金
瑞士国家科学基金会;
关键词
baryon asymmetry; neutrino theory; cosmological neutrinos; physics of the early universe; NUMBER NONCONSERVATION; DARK-MATTER; NEUTRINOS; SEARCH; VMSM;
D O I
10.1088/1475-7516/2010/09/001
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We perform a detailed analysis of baryon asymmetry generation in the nu MSM (an extension of the Standard Model by three singlet Majorana fermions with masses below the Fermi scale). Fixing a number of parameters of the nu MSM by the neutrino oscillation data, we determine the remaining domain of the parameter space from the requirement of successful baryogenesis. We derive, in particular, the constraints on the mass splitting of a pair of singlet fermions, and on the strength of their coupling to ordinary leptons, essential for searches of these particles in rare decays of mesons and in beam-dump experiments with intensive proton beams.
引用
收藏
页数:21
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