具有中间尺度电弱伽金诺的LZ高反冲事件的TeV希格斯诺解释
TeV Higgsino Interpretation of the LZ High-Recoil Event with Intermediate-Scale Electroweak Gauginos
- Institute of Physics, Henan Academy of Sciences（中国科学院河南分院物理研究所）
- Centre for Theoretical Physics, Henan Normal University（河南师范大学理论物理中心）
- School of Physics, Zhengzhou University（郑州大学物理学院）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
针对LZ高反冲事件，本文提出具有中间尺度电弱伽金诺的TeV希格斯诺解释，利用SU(5) GUT标度非普适边界条件抵消伽金诺贡献，验证构造的辐射敏感性与能谱一致性，同时指出其受太阳捕获约束。
AI中文摘要：
LUX-ZEPLIN（LZ）报告的高反冲事件促使人们提出了一种具有亚MeV中性态分裂的TeV希格斯诺。在非抵消情况下，最小超对称标准模型（MSSM）中如此小的间隙指向电弱伽金诺质量约为10^7 GeV，远高于希格斯诺质量。我们表明，在SU(5)大统一理论（GUT）标度下的非普适边界条件M1^G/M2^G=-3/5可抵消主导的超对称bino和wino贡献，且该条件在均匀单圈演化下保留至希格斯诺标度。剩余的有限伽金诺项在350 keV间隙、1.091 TeV希格斯诺和tanβ=10的条件下，允许wino质量接近120 TeV的可控树级解。我们识别出能实现所需伽金诺比率的混合SU(5)表示，并检验该构造的辐射敏感性和能谱一致性。由于非弹性Z耦合基本未被抑制，全密度热希格斯诺在其天体物理和输运假设下仍受已发表的太阳捕获约束限制。
英文摘要：
The high-recoil event reported by LUX--ZEPLIN motivates a TeV Higgsino with a sub-MeV neutral-state splitting. Away from cancellations, such a small gap in the MSSM points to electroweak-gaugino masses of order $10^7\,\mathrm{GeV}$, far above the Higgsino mass. We show that the non-universal boundary condition $M_1^G/M_2^G=-3/5$ at the $\mathrm{SU}(5)$ GUT scale cancels the leading bino and wino contributions and is preserved by homogeneous one-loop evolution down to the Higgsino scale. The remaining finite-gaugino terms admit a controlled tree-level solution with a wino mass near $120\TeV$ for a $350\keV$ gap, a $1.091\TeV$ Higgsino and $\tanβ=10$. We identify mixed $\mathrm{SU}(5)$ representations that realize the required gaugino ratio and examine the radiative sensitivity and spectrum consistency of this construction. Because the inelastic $Z$ coupling remains essentially unsuppressed, a full-density thermal Higgsino is still subject to the published solar-capture bounds under their astrophysical and transport assumptions.
