发表机构
School of Technology, Aristotle University of Thessaloniki（塞萨洛尼基亚里士多德大学技术学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出质量约0.1 PeV的重希格斯ino暗物质，通过模量非平衡衰变降低再加热温度至595 GeV以下，可解释宇宙冷暗物质丰度并符合LZ事件约束。
AI 中文摘要
我们证明，质量约为$m_{\tilde h}\sim0.1~{\rm PeV}$的重希格斯ino $\tilde h$，可以与最近的LUX-ZEPLIN事件保持一致，同时避免直接和间接探测的限制，并且如果再加热温度被限制为$T_{\rm rh}\lesssim 595~{\rm GeV}$，则可以解释当前宇宙中冷暗物质的丰度。这些值可以通过模量$\phi$（质量$m_{\phi}\gg m_{\tilde h}$）可能的非平衡衰变实现，该衰变具有非零分支比衰变为$\tilde h$，这在通过非热$\tilde h$产生将$T_{\rm rh}$降低到其上限以下的过程中起决定性作用。模量$\phi$可以被识别为goldstino超场的标量分量，该超场通过Giudice-Masiero机制参与MSSM的$\mu$参数（其中$\mu\simeq m_{\tilde h}$）的产生。
英文摘要
We show that a heavy higgsino $\tilde h$ with mass $m_{\tilde h}\sim0.1~{\rm PeV}$, which can be made consistent with the recent LUX-ZEPLIN event avoiding constraints from direct and indirect detection, can account for the present cold dark matter abundance of the universe, if the reheating temperature is bounded as $T_{\rm rh}\lesssim 595~{\rm GeV}$. These values can be achieved by a possible out-of-equilibrium decay of a modulus $ϕ$ with mass $m_ϕ\gg m_{\tilde h}$ and a non-vanishing branching ratio into $\tilde h$'s which plays a decisive role in reducing $T_{\rm rh}$ below its upper limit via the non-thermal $\tilde h$ production. The modulus $ϕ$ can be identified with the scalar component of the goldstino superfield which is involved in the generation of the $μ$ parameter of MSSM (with $μ\simeq m_{\tilde h}$) via the Giudice-Masiero mechanism.
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