arXiv 2606.267522026-06-26hep-ph

最小扩展scotogenic模型的全局分析

Global analysis of a minimally extended scotogenic model

School of Natural Science, Seoul National University of Science and Technology（首尔科学技术大学自然科学学院）

Huchan Lee, Sin Kyu Kang

备注：: 52 pages

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AI总结：

对最小扩展scotogenic模型进行全局分析，研究真空稳定性、暗物质候选者质量范围及味物理和电弱精确观测约束。

摘要：

我们针对由观测到的非零中微子质量、可行的暗物质候选者以及标准模型真空在高能下的不稳定性所启发的最小扩展scotogenic模型进行了全局分析。我们检查了来自扩展标量扇区的有界性条件、真空稳定性和RG驱动的微扰性界限，以及一组全面的味和电弱精确可观测量——包括μ子反常磁矩$\Delta a_{\mu}$、辐射衰变$\ell_{\alpha} \rightarrow \ell_{\beta} \gamma$和$\ell_{\alpha} \rightarrow 3\ell_{\beta}$、$\mu \rightarrow e$转换率、斜参数以及$Z$和$H$玻色子的轻子衰变。数值扫描揭示了四个显著特征：DESI BAO界限将排除倒序中微子质量等级（如果被其他实验证实）；斜参数预计将在未来精确测量的范围内；可行的费米子暗物质候选者质量位于$120-350 \func{GeV}$范围内，而CP奇标量被限制在$350-600 \func{GeV}$；我们的$Z \rightarrow \func{Invisible}$结果与世界平均值在$3\sigma$水平上一致，并且被最近的ATLAS测量在$3\sigma$水平上支持。

英文摘要：

We perform a global analysis of a minimally extended scotogenic model motivated by observed non-zero neutrino masses, viable dark matter (DM) candidates, and the instability of the Standard Model (SM) vacuum at high-energies. We examine the bounded-from-below conditions, vacuum stability, and RG-driven perturbativity bounds arising from the extended scalar sector, alongside a comprehensive set of flavor and electroweak (EW) precision observables - including the muon anomalous magnetic moment $Δa_μ$, the radiative decays $\ell_α \rightarrow \ell_β γ$ and $\ell_α \rightarrow 3\ell_β$, and the $μ\rightarrow e$ conversion rate, the oblique parameters, and leptonic decays of $Z$ and $H$ bosons. A numerical scan reveals four notable features: the DESI BAO bound would rule out the inverted hierarchy if confirmed by other experiments; the oblique parameters are projected to be within the reach of future precision measurements; the viable fermionic DM candidate mass lies in the range $120-350 \operatorname{GeV}$, while the CP-odd scalar is constrained to $350-600 \operatorname{GeV}$; and our result on $Z \rightarrow \operatorname{Invisible}$ is compatible with the world average at the $3σ$ level and is favored by the recent ATLAS measurement at the $3σ$ level.

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