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arXiv 2008.05450hep-ph
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$ν_R$ MSSM中的辐射中微子质量

Radiative Neutrino Masses in the $ν_R$MSSM

Pablo Candia da Silva, Apostolos Pilaftsis

摘要:

我们提出了一个完整的分析方案与辐射产生的中微子质量,可能会发生在最小超对称标准模型与低尺度右手中微子。为了简洁起见,我们将这样的模型称为$ν_R$ MSSM。我们特别注意的影响,非重整化定理的超对称性(SUSY)的环诱导中微子质量,通过执行我们的计算在弱和味基地。特别是,我们发现,所观察到的轻中微子质量的小,可能会自然出现由于软超对称屏蔽效应从一个近超对称的单重中微子部门。深刻的现象学和宇宙学的影响,可能源于这种屏蔽现象的$ν_R$ MSSM和它的最小扩展进行了讨论。

英文摘要:

We present a complete analysis of scenarios with radiatively generated neutrino masses that may occur in the Minimal Supersymmetric Standard Model with low-scale right-handed neutrinos. For brevity, we call such a model the $ν_R$MSSM. We pay particular attention to the impact of the non-renormalization theorem of supersymmetry (SUSY) on the loop-induced neutrino masses, by performing our computations in the weak and flavour bases. In particular, we find that the smallness of the observed light neutrino masses may naturally arise due to a soft SUSY-screening effect from a nearly supersymmetric singlet neutrino sector. The profound phenomenological and cosmological implications that may originate from this screening phenomenon in the $ν_R$MSSM and its minimal extensions are discussed.

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