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arXiv 2609.05689hep-phhep-ex

在轻子对撞机上通过反冲质量技术对类矢量顶夸克伙伴的无模型搜索

Agnostic search for a vector-like top partner at a lepton collider via the recoil mass technique

Higinio Valle, Cristina Oropeza Barrera, Oscar Ochoa-Valeriano

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中文总结 AI 辅助

本文在3 TeV电子-正电子对撞机上,利用反冲质量技术进行无模型搜索,以发现类矢量顶夸克伙伴,并评估了不同质量与耦合强度下的发现潜力。

中文摘要 AI 辅助

本文研究了在质心能量为$\sqrt{s}=3$ TeV的$e^{+}e^{-}$对撞机上类矢量顶夸克伙伴$T$的单产生过程,采用基于反冲质量观测量构建的、与衰变模式和质量无关的事件选择方法。该分析依赖于经过通用重建和事件选择链处理的完全模拟样本。基线选择在无束流极化和无初态辐射(ISR)的条件下得到验证。随后评估了更真实运行条件的影响,包括初态辐射以及$e^{-}$束流极化度为$-80\\%$的情况,并绘制了发现能力随顶夸克伙伴质量$m_{T}$和耦合强度$\kappa_{T}$变化的图谱。在基线扫描中,当$\kappa_{T}$超过约0.3时,最低基准质量点的估计统计显著性升至$3\sigma$以上。

英文摘要

A study of the single production of a vector-like top partner $T$ at a $\sqrt{s}=3$ TeV $e^{+}e^{-}$ collider is presented, using a decay-mode and mass-agnostic event selection built around the recoil mass observable. The analysis relies on fully simulated samples processed through a common reconstruction and event selection chain. The baseline selection is validated without beam polarization or initial-state radiation (ISR). The impact of more realistic running conditions, including ISR together with an $e^{-}$ beam polarization of $-80\%$, is then evaluated and the discovery reach is mapped as a function of the top partner mass $m_{T}$ and coupling strength $κ_{T}$. In the baseline scan, the estimated statistical significance rises above $3σ$ for the lowest benchmark masses once $κ_{T}$ exceeds approximately 0.3.

发表机构

  • Universidad Iberoamericana Ciudad de México(墨西哥城伊比利亚美洲大学)

机构由 AI 辅助整理,请以论文原文为准。

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