LUX-ZEPLIN高反冲窗口中通过暗光子的弹性环面矢量暗物质
Elastic toroidal vector dark matter through a dark photon in the LUX-ZEPLIN high recoil window
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中文总结 AI 辅助
本文研究LUX-ZEPLIN高反冲窗口中的弹性环面矢量暗物质，通过暗光子解析相互作用，提出可重整化模型，并给出谱、同位素等关联检验。
中文摘要 AI 辅助
2026年LUX-ZEPLIN搜索在扩展窗口中报告了一个核反冲候选事件，能量为$248\pm23_{\rm stat}\pm23_{\rm sys}~\mathrm{keV}$，该窗口延伸至约$270~\mathrm{keV}$。我们考虑中性复矢量暗物质通过其维度六环面电磁矩的弹性散射，并在此反冲区域发现显著的谱权重。非相对论约化将$\mathcal O_{17}$和$\mathcal O_{20}$关联起来，将相干电荷分支与横向自旋张量分支联系起来。对于$m_X=1~\mathrm{TeV}$，天然氙在$204.8$至$206.6~\mathrm{keV}$处表现出宽的高反冲极大值，并在$248~\mathrm{keV}$处保留该极大值的$80.4$至$85.4\\%$。通过暗光子解析该相互作用，将高反冲与低反冲之比与中介子质量联系起来。一个可重整化的$SU(2)_X\times U(1)_D$实现通过残余$Z_3$规范对称性稳定复矢量，并通过携带物理CP相的矢量样中介子产生环面电流。对于$m_X=0.998~\mathrm{TeV}$和$m_{A'}=0.450~\mathrm{GeV}$的基准情形，GCN的$R(248)/R(50)=1.43$，JJ55的为$1.21$，而奇数$A$氙占比保持在$99.9\\%$以上。在该基准下，$350$至$590~\mathrm{keV}$与$100$至$270~\mathrm{keV}$区间的响应水平比约为$0.46$。对于自旋为零的氩，张量分支不存在，而年调制仍保持在百分之几的水平。由此产生的谱、同位素、靶、时间、中介子和高能依赖性为LZ反冲的弹性张量解释提供了关联检验。
英文摘要
The 2026 LUX-ZEPLIN search reports one nuclear recoil candidate at $248\pm23_{\rm stat}\pm23_{\rm sys}~\mathrm{keV}$ in an extended window reaching about $270~\mathrm{keV}$. We consider elastic scattering of neutral complex vector dark matter through its dimension-six toroidal electromagnetic moment and find appreciable spectral weight in this recoil region. The nonrelativistic reduction correlates $\mathcal O_{17}$ and $\mathcal O_{20}$, relating a coherent charge branch to a transverse spin tensor branch. For $m_X=1~\mathrm{TeV}$, natural xenon exhibits a broad high recoil maximum at $204.8$ to $206.6~\mathrm{keV}$ and retains $80.4$ to $85.4\%$ of this maximum at $248~\mathrm{keV}$. Resolving the interaction through a dark photon relates the high-to-low recoil ratio to the mediator mass. A renormalizable $SU(2)_X\times U(1)_D$ realization stabilizes the complex vector by a residual $Z_3$ gauge symmetry and generates the toroidal current through vectorlike messengers carrying a physical CP phase. For a benchmark with $m_X=0.998~\mathrm{TeV}$ and $m_{A'}=0.450~\mathrm{GeV}$, $R(248)/R(50)=1.43$ for GCN and $1.21$ for JJ55, while the odd $A$ xenon fraction remains above $99.9\%$. The response level ratio between the $350$ to $590~\mathrm{keV}$ and $100$ to $270~\mathrm{keV}$ intervals is about $0.46$ at this benchmark. The tensor branch is absent for spin zero argon, whereas annual modulation remains at the few percent level. The resulting spectral, isotope, target, timing, mediator, and high energy dependences give correlated tests of an elastic tensor interpretation of the LZ recoil.
发表机构
- Zhejiang Normal University（浙江师范大学）
- Khazar University（哈扎尔大学）
- Università di Napoli “Federico II”（那不勒斯费德里科二世大学）
- Istituto Nazionale di Fisica Nucleare (INFN), sez. di Napoli（意大利国家核物理研究所那不勒斯分部）
- Scuola Superiore Meridionale（南方高等学院）
- National University of Uzbekistan（乌兹别克斯坦国立大学）
- Harbin Institute of Technology（哈尔滨工业大学）
- Kimyo International University in Tashkent（塔什干金宇国际大学）
- Walailak University（瓦拉耶拉大学）
机构由 AI 辅助整理，请以论文原文为准。
