Title: Search potential for $\tilde{b}_{1} \rightarrow t W \tildeχ_{1}^{0}$ via $\tildeχ^{\pm}_{1}$ at the LHC and HL-LHC, with multi-lepton signatures Show Chinese title

Title: 通过在LHC和HL-LHC上使用$\tildeχ^{\pm}_{1}$进行搜索，寻找$\tilde{b}_{1} \rightarrow t W \tildeχ_{1}^{0}$的潜在迹象，具有多轻子特征

Abstract: The search potential for sbottom pair production in an R-parity conserving scenario is explored in multi-lepton final states at LHC Run-3 and the HL-LHC. In this model, the sbottom decays via a chargino, $\tilde{b}_1 \to t \tilde{\chi}_1^\pm$, with a branching ratio (BR) of 100%. The chargino subsequently decays into a $W$ boson and the lightest neutralino, $\tilde{\chi}_1^\pm \to W \tilde{\chi}_1^0$, also with a BR of 100%. Two mass configurations are considered for $\tilde{\chi}_1^0$: a fixed value of 50 GeV, and a scenario where $\tilde{\chi}_1^\pm$ is 100 GeV heavier than $\tilde{\chi}_1^0$. The study follows the ATLAS object definitions and event selection criteria as detailed in Refs.1-3, extending the analysis presented in Ref. 2. Results are presented as projected exclusion limits in the $\tilde{b}_1$-$\tilde{\chi}_1^0$ and $\tilde{b}_1$-$\tilde{\chi}_1^\pm$ mass planes for three center-of-mass energies (13 TeV, 13.6 TeV, and 14 TeV) and three integrated luminosity scenarios (139 fb$^{-1}$, 300 fb$^{-1}$, and 3000 fb$^{-1}$). Depending on the $\tilde{\chi}_1^0$ mass assumption, sbottom masses up to 1.28 TeV can be excluded at the HL-LHC with 3000 fb$^{-1}$. These projections highlight the impact of alternative mass configurations on the sensitivity of multi-lepton \sbsbModel searches and provide guidance for future strategies targeting challenging SUSY scenarios at the LHC. Show Chinese abstract

Abstract: 在LHC运行3和高亮度LHC（HL-LHC）的多轻子末态中，探索了在R宇称守恒情景下sbottom对产生搜索潜力。 在这个模型中，sbottom通过带电子$\tilde{b}_1 \to t \tilde{\chi}_1^\pm$进行衰变，分支比（BR）为100%。 随后带电子衰变为$W$玻色子和最轻的中性子，$\tilde{\chi}_1^\pm \to W \tilde{\chi}_1^0$，同样分支比为100%。 对于$\tilde{\chi}_1^0$考虑了两种质量配置：一个固定值50 GeV，以及$\tilde{\chi}_1^\pm$比$\tilde{\chi}_1^0$重100 GeV的情况。 该研究遵循ATLAS对象定义和事件选择标准，如参考文献1-3中详细所述，扩展了参考文献2中提出的分析。 结果以投影排除限的形式呈现，在$\tilde{b}_1$-$\tilde{\chi}_1^0$和$\tilde{b}_1$-$\tilde{\chi}_1^\pm$质量平面上，针对三种质心系能量（13 TeV，13.6 TeV 和 14 TeV）和三种积分亮度情景（139 fb$^{-1}$，300 fb$^{-1}$，和 3000 fb$^{-1}$）。 Depending on the $\tilde{\chi}_1^0$ mass assumption, sbottom masses up to 1.28 TeV can be excluded at the HL-LHC with 3000 fb$^{-1}$. These projections highlight the impact of alternative mass configurations on the sensitivity of multi-lepton \sbsbModel searches and provide guidance for future strategies targeting challenging SUSY scenarios at the LHC.