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arXiv 1208.4607hep-phastro-ph.CO
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暗物质、重子生成和右手中微子的中微子振荡

Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos

Laurent Canetti, Marco Drewes, Tibor Frossard, Mikhail Shaposhnikov

备注：
We extended the discussion in several sections, in particular 2, 3 and 8, in response to comments we received after submission of version 1. We added appendix C
发表信息：
Phys. Rev. D 87, 093006 (2013)
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摘要：

我们表明，撇开加速宇宙膨胀，所有的实验数据，在高能物理，通常认为需要物理学超越标准模型可以解释时，完成它的三个右手中微子，可以使用当前的实验技术搜索。实现这一设想的模型被称为中微子最小标准模型（νMSM）。在本文中，我们对νMSM中所有已知的约束进行了全面的总结，并对该模型进行了教学介绍。我们提出了第一个完整的定量研究的参数空间的模型，没有物理超越νMSM是需要同时解释中微子振荡，暗物质和重子不对称的宇宙。这就需要跟踪左，右手中微子丰度从热大爆炸的初始条件下的温度低于QCD标度的时间演化。我们发现，共振放大，CP违反味振荡，散射和衰变的相互作用导致了一些以前未知的约束的无菌中微子的属性。在最近的中微子混合角θ_{13}非零的证据面前，我们进一步重新分析了过去对撞机实验和大爆炸核合成的边界。我们结合现有的天体物理学和宇宙学的暗物质属性的限制，我们所有的结果。我们的研究结果提供了一个指导方针，为未来的实验寻找不育中微子。对无菌中微子质量和混合的限制的总结出现在arXiv：1204.3902 [hep-ph]中。在本文中，我们提供了我们的计算的所有细节，并给出了其他模型参数的约束条件。

英文摘要：

We show that, leaving aside accelerated cosmic expansion, all experimental data in high energy physics that are commonly agreed to require physics beyond the Standard Model can be explained when completing it by three right handed neutrinos that can be searched for using current day experimental techniques. The model that realises this scenario is known as Neutrino Minimal Standard Model (νMSM). In this article we give a comprehensive summary of all known constraints in the νMSM, along with a pedagogical introduction to the model. We present the first complete quantitative study of the parameter space of the model where no physics beyond the νMSM is needed to simultaneously explain neutrino oscillations, dark matter and the baryon asymmetry of the universe. This requires to track the time evolution of left and right handed neutrino abundances from hot big bang initial conditions down to temperatures below the QCD scale. We find that the interplay of resonant amplifications, CP-violating flavour oscillations, scatterings and decays leads to a number of previously unknown constraints on the sterile neutrino properties. We furthermore re-analyse bounds from past collider experiments and big bang nucleosynthesis in the face of recent evidence for a non-zero neutrino mixing angle θ_{13}. We combine all our results with existing constraints on dark matter properties from astrophysics and cosmology. Our results provide a guideline for future experimental searches for sterile neutrinos. A summary of the constraints on sterile neutrino masses and mixings has appeared in arXiv:1204.3902 [hep-ph]. In this article we provide all details of our calculations and give constraints on other model parameters.

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