Top squark (stop) is a crucial part of supersymmetric models (SUSY) to understand the naturalness problem. Other than the traditional stop pair production, the single production via electroweak interaction provides signals with distinctive features which could help confirm the existence of the top squark. In this paper, we investigate the observability of stop through the mono-top channel of the single stop production at the future proton-proton colliders, FCC-hh and SPPC, in a simplified Minimal Supersymmetric Standard Model (MSSM). With the integrated luminosity of 3000 ${\text{fb}}^{-1}$, we can probe the stop with mass up to 3.25 TeV by the mono-top channel at 5σ level. Considering the systematic uncertainty of 10%, the exclusion limit for stop mass can be reached at about 1.5 TeV. Exclusion limits on stop mass and higgsino mass parameter μ are also presented.

上排（停止）是理解自然性问题的超对称模型（SUSY）的关键部分。除了传统的停止对生产之外，通过电弱相互作用进行的单一生产还提供具有独特功能的信号，这些信号可以帮助确认顶部夸克的存在。在本文中，我们在简化的最小超对称标准模型（MSSM）中研究了未来质子-质子对撞机FCC-hh和SPPC在单站生产中通过单站通道的站的可观察性。具有3000的综合光度${\text{fb}}^{-\mathrm{1个}}$，我们可以通过5σ水平的单顶通道探测质量最高为3.25 TeV的光阑。考虑到10％的系统不确定性，停止质量的排除极限可以达到约1.5 TeV。还给出了停止质量和希格西诺质量参数μ的排除极限。