发表机构
National Centre for Nuclear Research（波兰国家核子研究中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出，LUX-ZEPLIN的大反冲事件可由GUT诱导的类狄拉克暗物质解释，并预言了质量在数十TeV的Z'玻色子，该信号有望被FCC-hh早期发现。
AI 中文摘要
最近在LUX-ZEPLIN实验中观测到的一个具有大反冲能量的事件，可以通过类狄拉克粒子（如MSSM的Higgsino）的非弹性散射得到可能解释。对于类狄拉克暗物质，质量劈裂$\delta m$与某些较重态的质量相关。虽然粗略的量纲分析似乎表明，即使在未来的对撞机上，这些重粒子的质量范围也难以触及，但我们指出，在GUT诱导的情景中情况并非如此。基于SU(6)的具体模型，我们表明实验上偏好的$\delta m$意味着存在一个质量在数十TeV量级的$Z'$规范玻色子。我们推导了在双轻子道中预期的$Z'$信号，并将其与FCC-$hh$对$Z'$共振的灵敏度进行比较。我们证明，该$Z'$完全处于FCC-$hh$早期发现潜力的可达范围内。
英文摘要
The recent observation of an event with large recoil energy at LUX-ZEPLIN has found a possible explanation in terms of the inelastic scattering of a pseudo-Dirac particle like the Higgsino of the MSSM. For pseudo-Dirac dark matter, the mass splitting $δm$ is correlated with the mass of some heavier states. While rough dimensional considerations seem to indicate mass ranges of the heavy particles hopelessly out of reach even at future colliders, we point out that this is not the case in GUT-induced scenarios. Working with a specific model based on SU(6), we show that the experimentally favored $δm$ implies the presence of a $Z'$ gauge boson with a mass in the 10s of TeV. We derive the predicted $Z'$ signal in the dilepton channel and we confront it with the sensitivity of the FCC-$hh$ to $Z'$ resonances. We show that the $Z'$ falls squarely in reach of the early discovery potential of the FCC-$hh$.
Comments8 pages, 3 figures, 2 tables
