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arXiv 1208.2613hep-ph
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θ_{13}非零和暖暗物质的辐射跷跷板模型

Radiative Seesaw Model with Non-zero θ_{13} and Warm Dark Matter Scenario

Ping-Kai Hu

摘要:

利用最新的实验结果,我们研究了Ma的辐射跷跷板模型。我们试图用较少的假设来研究这个模型的可行性。CDM和WDM方案都考虑在内。在CDM方案中,残体丰度的拟合表明,在理论保持可微扰性的前提下,质谱M_1 < m_0 < M_2是较好的。通过对味破坏过程μ \rightarrow e γ和剩余密度丰度的研究,得到了模型的强约束.此外,我们还尝试在模型中解释μ子反常a_μ \equiv(g-2)/2,但新粒子的贡献太小,不能解释这种差异。在WDM方案中,我们证明了残余丰度可以通过热生产和随后的熵稀释过程产生。熵稀释可以通过N_2衰变来实现,但需要M_1 < M_2 < m_0。

英文摘要:

With updated experiment result, we study Ma's radiative seesaw model. We try to use fewer assumptions to study the feasibility of this model. Both CDM and WDM scenario are taken into consideration. In CDM scenario, the fitting of relic abundance shows that a mass spectrum M_1 < m_0 < M_2 is preferred if theory remains perturbability. By studying the flavour violation process μ\rightarrow e γand relic density abundance, we get very strong constraint for the model. In addition, we try to explain muon anomaly a_μ \equiv (g-2)/2 within the model, but the contribution induced by new particles is too small to account for the discrepancy. In WDM scenario, We show that relic abundance can be produced by thermal production with subsequent entropy dilution process. The entropy dilution can be attained by N_2 decay in which a mass spectrum M_1 < M_2 < m_0 is required.

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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