论文标题
Xenon1t多余
The KSVZ Axion and Pseudo-Nambu-Goldstone Boson Models for the XENON1T Excess
论文作者
论文摘要
Xenon1t多余的轴是像粒子（ALP）暗物质一样解释的，质量约为2.5 keV。但是，需要解决三个问题：在ALP和光子之间抑制$ g_ {aγ} $，并在ALP和电子之间以及正确的ALP质量之间生成适当的耦合$ G_ {AE} $。我们建议三个模型来解决这些问题。在我们的模型中，$ g_ {ae} $耦合是通过集成矢量般的瘦素来产生的，而正确的ALP质量来自高维操作员。在KSVZ轴模型中，可以通过选择适当的类似矢量的费米子来抑制$ g_ {aγ} $的耦合，但是我们需要一些微调来获得ALP质量。同样，可以研究DFSZ轴模模型。在$ z_8 $和$ u（1）_x $模型中，具有近似伪-Nambu-goldstone玻色子（PNGBS），由于$ g_ {aγ} $的耦合由于$ su（3）_C \ times _c \ times u（times u（times times u（times times u（times times u（times times u（times times u）），在$ Z_8 $模型中，可以通过Dimension-8操作员自然地在KEV量表上生成PNGB质量。为了在$ Z_8 $型号中解决PNGB质量问题，我们将其嵌入了$ u（1）_x $ gauge对称性中。
The XENON1T excess can be explained by the Axion Like Particle (ALP) dark matter with mass around 2.5 keV. However, there are three problems needed to be solved: suppressing the coupling $g_{aγ}$ between the ALP and photon, and generating the proper coupling $g_{ae}$ between the ALP and electron as well as the correct ALP mass. We propose three models to solve these problems. In our models, the $g_{ae}$ couplings are produced by integrating out the vector-like leptons, and the correct ALP masses arise from high-dimensional operators. In the KSVZ axion model, the coupling $g_{aγ}$ can be suppressed by choosing proper sets of vector-like fermions, but we need some fine-tunings to obtain the ALP mass. Similarly, one can study the DFSZ axion model. In the $Z_8$ and $ U(1)_X$ models with approximate Pseudo-Nambu-Goldstone Bosons (PNGBs), the coupling $g_{aγ}$ is suppressed due to $SU(3)_C \times U(1)_{\rm EM}$ anomaly free. In the $Z_8$ model, the PNGB mass can be generated naturally at the keV scale via the dimension-8 operator. To solve the PNGB quality problem in the $ Z_8$ model, we embed it into the model with $ U(1)_X$ gauge symmetry.
