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arXiv 1907.01488hep-ph
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中微子质量与有限模群双覆盖的混合

Neutrino Masses and Mixing from Double Covering of Finite Modular Groups

Xiang-Gan Liu, Gui-Jun Ding

摘要:

将模不变式方法中的偶权模形式推广到一般的整权模形式。我们发现整权和整水平$N$的模形式可以被安排成齐次有限模群$Γ'_N$的不可约表示,它是$Γ_N$的双重覆盖.利用Dedekind η函数构造了第三层的最低权1模形式,并将其变换为$Γ'_3 \cong T'$的一个偶模.给出了权2、3、4、5和6的模形式。基于$T'$模对称性建立了轻子质量和混合模型。

英文摘要:

We extend the even weight modular forms of modular invariant approach to general integral weight modular forms. We find that the modular forms of integral weights and level $N$ can be arranged into irreducible representations of the homogeneous finite modular group $Γ'_N$ which is the double covering of $Γ_N$. The lowest weight 1 modular forms of level 3 are constructed in terms of Dedekind eta-function, and they transform as a doublet of $Γ'_3 \cong T'$. The modular forms of weights 2, 3, 4, 5 and 6 are presented. We build a model of lepton masses and mixing based on $T'$ modular symmetry.

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