发表机构
Institute for Nuclear Research of the Russian Academy of Sciences; I.E. Tamm Department of Theoretical Physics, Lebedev Physical Institute（俄罗斯科学院核物理研究所; 列别杰夫物理研究所伊.E.塔姆理论物理系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究聚焦Sgoldstino在SND@HL-LHC实验中的产生与探测前景，回顾其与标准模型粒子的相互作用、产生道及实验约束，分析探测器内μ子对特性，给出灵敏度估计并指出需考虑μ子分离效率。
AI 中文摘要
我们研究质量从双μ子阈值到几个GeV的轻标量sgoldstino的唯象学，重点关注其在SND@HL-LHC实验中的产生和探测前景。我们回顾了sgoldstino与标准模型粒子的有效相互作用、主导的介子衰变产生道，以及对模型参数空间的相关实验约束。我们还概述了最近提出的SND@HL-LHC探测器配置，讨论了sgoldstino在探测器体积内衰变产生的μ子对的运动学和径迹分离。对于两组代表性的超对称破缺参数，我们给出了灵敏度估计，并指出在寻找双μ子信号时应考虑μ子-反μ子分离效率。
英文摘要
We study the phenomenology of light scalar sgoldstinos, with masses from the dimuon threshold up to a few GeV, focusing on their production and detection prospects at the SND@HL-LHC experiment. We review the effective sgoldstino interactions with Standard Model particles, the dominant meson-decay production channels, and the relevant experimental constraints on the model parameter space. We also outline the recently proposed SND@HL-LHC detector configuration and discuss the kinematics and track separation of the muon pair produced in sgoldstino decays inside the detector volume. For two representative sets of supersymmetry-breaking parameters, we present sensitivity estimates and show that the muon-antimuon separation efficiency should be taken into account in searches for the dimuon signal.
Comments18 pages, 13 figures
