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arXiv 2211.08136hep-ph
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来自模对称的轻子质量矩阵的纹理零点模式

Texture-zero patterns of lepton mass matrices from modular symmetry

Gui-Jun Ding, F. R. Joaquim, Jun-Nan Lu

AI总结:

在 $T'$ modular symmetry 框架下系统分析了轻子质量矩阵的 texture-zero patterns,获得了所有可能的模式并构建了代表性模型,详细讨论了其对轻子混合角等物理量的预测及三种质量生成机制的 benchmark models。

摘要:

费米子质量矩阵中的纹理零点一直被广泛用于解决标准模型 flavor 谜题。在本研究中,我们在 $Γ_{3}'\cong T'$ modular symmetry 的框架下,对轻子质量矩阵中的 texture zeros 进行了系统分析。假设轻子场作为 $T'$ 的不可约表示变换,我们获得了带电轻子和中微子质量矩阵中所有可能从 $T'$ modular symmetry 实现的 texture-zero patterns。我们为这些在现象学上可行的 textures 提供了代表性模型,它们能够容纳实验数据。我们讨论了对轻子混合角、CP 破坏相、轻中微子质量以及与无中微子 double beta decay 相关的有效中微子质量的预测。我们发现,最小可行的轻子模型仅依赖于 $7$ 个实自由参数,包括模数 $τ$(相应的带电轻子质量矩阵包含 $4$ 个零项,而中微子质量矩阵有 $1$ 个 texture zero)。最后,我们详细研究了三个 benchmark models,分别对应于所考虑的每种中微子质量生成机制(Dirac、通过 Weinberg operator 的 Majorana 以及通过 minimal type-I seesaw mechanism 的 Majorana)。

英文摘要:

Texture zeros in fermion mass matrices have been widely considered in tackling the Standard Model flavour puzzle. In this work, we perform a systematic analysis of texture zeros in lepton mass matrices in the framework of $Γ_{3}'\cong T'$ modular symmetry. Assuming that the lepton fields transform as irreducible representations of $T'$, we obtain all possible texture-zero patterns for both charged-lepton and neutrino mass matrices which can be achieved from $T'$ modular symmetry. We provide representative models for the phenomenologically-viable textures which can accommodate the experimental data. The predictions for lepton mixing angles, CP-violating phases, light neutrino masses and effective neutrino mass relevant for neutrinoless doble beta decay, are discussed. We find that the minimal viable lepton model depends on only $7$ real free parameters including the modulus $τ$ (the corresponding charged-lepton mass matrix contains $4$ vanishing entries, and the neutrino mass matrix has $1$ texture zero). Finally, we study in detail three benchmark models, one for each neutrino mass generation mechanism considered (Dirac, Majorana via Weinberg operator and Majorana via minimal type-I seesaw mechanism).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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