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arXiv · 1907.01488

Neutrino Masses and Mixing from Double Covering of Finite Modular Groups

Xiang-Gan Liu·Gui-Jun Ding
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Abstract

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 $\Gamma'_N$ which is the double covering of $\Gamma_N$. The lowest weight 1 modular forms of level 3 are constructed in terms of Dedekind eta-function, and they transform as a doublet of $\Gamma'_3 \cong T'$. 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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Xiang-Gan Liu, Gui-Jun Ding. 2019-07-02. Neutrino Masses and Mixing from Double Covering of Finite Modular Groups. https://doi.org/10.1007/jhep08(2019)134

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