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arXiv 1002.2705hep-ph
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$μν$ SSM中中微子质量和混合的辐射贡献

Radiative contribution to neutrino masses and mixing in $μν$SSM

Pradipta Ghosh, Paramita Dey, Biswarup Mukhopadhyaya, Sourov Roy

摘要:

在最小超对称标准模型(一般称为$μν$ SSM)的推广中,引入了三个右手中微子超场来解决$μ$ -问题,并容纳了非零中微子质量和混合.树级中微子质量是通过$R-$宇称破坏和跷跷板机制产生的。我们分析了单圈贡献对中微子质量矩阵的全部影响。我们表明,目前的三味全球中微子数据可以容纳在$μν$ SSM,树水平和单圈校正分析。我们发现,它是相对更容易容纳正常的层次质量模式相比,倒置的层次或准退化的情况下,当一个循环校正。

英文摘要:

In an extension of the minimal supersymmetric standard model (popularly known as the $μν$SSM), three right handed neutrino superfields are introduced to solve the $μ$-problem and to accommodate the non-vanishing neutrino masses and mixing. Neutrino masses at the tree level are generated through $R-$parity violation and seesaw mechanism. We have analyzed the full effect of one-loop contributions to the neutrino mass matrix. We show that the current three flavour global neutrino data can be accommodated in the $μν$SSM, for both the tree level and one-loop corrected analyses. We find that it is relatively easier to accommodate the normal hierarchical mass pattern compared to the inverted hierarchical or quasi-degenerate case, when one-loop corrections are included.

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