$D_4$二面体对称性下的费米子质量层级与四零纹理2HDM-Tx中的味信号
Fermion mass hierarchy and flavor signals from a $D_4$ dihedral symmetry within a 2HDM-Tx with four-zero textures
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中文总结 AI 辅助
提出基于$D_4$对称性的2HDM-Tx模型,通过非等价汤川矩阵生成四零纹理,解释费米子质量层级,同时容纳95和152 GeV共振超出,满足LHC数据及轻子味破坏约束。
中文摘要 AI 辅助
我们提出一个扩展的纹理化双希格斯二重态模型(2HDM-Tx),其中离散$D_4$对称性预言了费米子质量矩阵中的四零纹理。与标准假设(即底层汤川矩阵结构相同)不同,我们引入了一种非等价矩阵的新构型,这些矩阵互补地生成特定的厄米四零质量结构。该框架自然地抑制了味改变中性流,并为费米子质量层级提供了结构上的解释,同时还包含一个暗物质候选者。作为具体的唯象应用,我们表明该模型同时容纳了在$95\text{ GeV}$和$152\text{ GeV}$处持续存在的中性共振超出,满足当前LHC希格斯数据,并与轻子味破坏过程的严格上限一致。这些组合约束严重限制了标量唯象的参数空间。最后,我们研究了在高亮度LHC上发现轻子味破坏过程$h \to \tau \mu$的前景。
英文摘要
We propose an extended Texturized Two-Higgs Doublet Model (2HDM-Tx) where a discrete $D_4$ symmetry predicts a four-zero texture in the fermion mass matrices. In contrast to the standard ansatz where the underlying Yukawa matrices are assumed to be structurally identical, we introduce a novel configuration of non-equivalent matrices that complementarily generate a specific Hermitian four-zero mass structure. This framework naturally suppresses flavor-changing neutral currents and provides a structural rationale for the fermion mass hierarchy, while in addition including a dark matter candidate. As a concrete phenomenological application, we show that the model simultaneously accommodates the persistent neutral resonance excesses at $95\text{ GeV}$ and $152\text{ GeV}$, satisfies current \text{LHC} Higgs data, and is consistent with the stringent upper bounds from lepton flavor violation processes. These combined constraints severely restrict the parameter space of the scalar phenomenology. Finally, we study the prospects for the discovery of the lepton-flavor violating process $h \to τμ$ at the High-Luminosity LHC.
发表机构
- Facultad de Ciencias Físico-Matemáticas(物理与数学科学学院)
- Centro Interdisciplinario de Investigación y Enseñanza de la Ciencia(科学跨学科研究与教学中心)
- Sibatel Communications(西巴特尔通信公司)
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