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arXiv 1006.0133hep-phastro-ph.HE
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NuMSM中宇宙的重子不对称性

Baryon Asymmetry of the Universe in the NuMSM

Laurent Canetti, Mikhail Shaposhnikov

摘要:

我们进行了详细的分析,在NuMSM(扩展的标准模型的三个单重态马约拉纳费米子的质量低于费米尺度)的重子不对称性的产生。利用中微子振荡数据确定了NuMSM的若干参数,并根据重子生成的要求确定了参数空间的剩余区域。我们得出,特别是,一对单重态费米子的质量分裂的约束,和他们的耦合到普通轻子的强度,这些粒子的搜索在罕见的介子衰变和在束流转储实验与密集的质子束必不可少的。

英文摘要:

We perform a detailed analysis of baryon asymmetry generation in the NuMSM (an extension of the Standard Model by three singlet Majorana fermions with masses below the Fermi scale). Fixing a number of parameters of the NuMSM 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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