发表机构
Department of Physics E. Pancini, Università di Napoli Federico II; INFN Sezione di Napoli; Institute for Particle Physics Phenomenology, Durham University（那不勒斯费德里科二世大学E. Pancini物理系; 意大利国家核物理研究所那不勒斯分部; 杜伦大学粒子物理现象学研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文利用复合非弹性暗物质模型解释LZ实验观测到的248 keV核反冲事件，通过维度十算符和轻子恐惧矢量介体，在特定参数下与实验数据相符。
AI 中文摘要
LUX-ZEPLIN（LZ）合作组报告了一个核反冲候选事件，其重建能量为$248\pm23_{\rm stat}\pm23_{\rm sys}\\,\mathrm{keV}$。我们研究了一种复合非弹性暗物质解释，其中维度十算符将禁闭$SU(3)_{\rm D}$理论中最轻的重子分裂为两个马约拉纳态。吸热散射由耦合到重子数的轻子恐惧矢量介导。对于暗重子质量为$1\\,\mathrm{TeV}$、劈裂为$300\\,\mathrm{keV}$的情况，参考核子截面$6.5\times10^{-43}\\,\mathrm{cm^2}$位于LZ已公布的双侧90%置信区间内。该基准固定了$M_V/g_B\simeq9.9\\,\mathrm{TeV}$，其中$M_V$和$g_B$分别是介体质量和重子数规范耦合，并且与太阳中微子和双喷注约束相容。
英文摘要
The LUX-ZEPLIN (LZ) Collaboration has reported a nuclear-recoil candidate with reconstructed energy $248\pm23_{\rm stat}\pm23_{\rm sys}\,\mathrm{keV}$. We investigate an interpretation in terms of composite inelastic dark matter, in which a dimension-ten operator splits the lightest baryon of a confining $SU(3)_{\rm D}$ theory into two Majorana states. Endothermic scattering is mediated by a leptophobic vector coupled to baryon number. For a dark-baryon mass of $1\,\mathrm{TeV}$ and a splitting of $300\,\mathrm{keV}$, a reference nucleon cross section of $6.5\times10^{-43}\,\mathrm{cm^2}$ lies within LZ's published two-sided 90\% confidence interval. This benchmark fixes $M_V/g_B\simeq9.9\,\mathrm{TeV}$, where $M_V$ and $g_B$ are the mediator mass and baryon-number gauge coupling, and is compatible with solar neutrino and dijet constraints.
Comments6 pages, 1 figure
