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arXiv 0802.3470hep-ph
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微扰SO(10)模型中的轻子生成

Leptogenesis in a perturbative SO(10) model

Tatsuru Kikuchi

摘要:

我们考虑一个唯象上可行的SO(10)大统一模型,它允许微扰计算到普朗克尺度或弦尺度。我们使用一组希格斯超场{10 + 16 bar + 16 + 45}。在此框架下,重新检验了带电费米子质量矩阵的数据拟合。这个模型确实能再现与带电费米子质量和混合有关的低能实验数据。对于中微子部分,我们以中微子振荡数据为输入数据,构造了右手Majorana中微子质量矩阵,并对与右手中微子有关的物理现象,如中微子的轻子生成和质子衰变进行了预测。我们提出了两种唯象上可行的模型,称为模型1和模型2。我们表明,模型之一(模型2)是符合所有的实验约束。

英文摘要:

We consider a phenomenologically viable SO(10) grand unification model which allows perturbative calculations up to the Planck scale or the string scale. We use a set of Higgs superfields {10 + 16bar + 16 + 45}. In this framework, the data fitting of the charged fermion mass matrices is re-examined. This model can indeed reproduce the low-energy experimental data relating the charged fermion masses and mixings. As for the neutrino sector, we take the neutrino oscillation data as input data to construct right-handed Majorana neutrino mass matrix and get a prediction for the physics related to the right-handed neutrinos, e.g. the leptogenesis and for the proton decay. We propose two kinds of phenomenologically viable model, quoted as Model 1 and Model 2. We show that one of the models (Model 2) is consistent with all experimental constraints.

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