arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2511.03479hep-ph
收藏

探索未来 $e^+e^-$ 对撞机中发现 95 GeV 标量粒子的发现潜力

Exploring the Discovery Reach for a 95 GeV Scalar in Future $e^+e^-$ Collisions

Mukesh Kumar, Pramod Sharma, Karabo Mosala, Bruce Mellado

AI总结:

本研究针对约 95 GeV 新标量共振迹象,探讨了其在未来正负电子对撞机中的发现潜力,利用反冲质量法和深度神经网络优化信号识别,证明在特定能量与亮度下可实现 5σ 显著性观测。

摘要:

LEP 最初报告并在双光子、$ττ$ 和 $W^+ W^-$ 通道中得到 CMS 和 ATLAS 支持的质量约 95 GeV 新标量共振迹象,促使人们探索其在未来正负电子对撞机中的发现潜力。本研究关注通过 $e^+ e^- \rightarrow ZS$ 产生新标量($S$),其中 $Z \rightarrow μ^+ μ^-$ 且 $S \rightarrow b \bar{b}$,并利用反冲质量法优化信号识别。通过采用深度神经网络进行信号-背景判别,我们证明与标准模型希格斯玻色子混合角约为 0.1 的 95 GeV 标量,可在 $\sqrt{s}$ = 250 GeV 或 200 GeV 及 5 ab$^{-1}$ 积分亮度下以 5$σ$ 显著性被观测到。

英文摘要:

The observed indications for a new scalar resonance with a mass around 95\,GeV, initially reported by LEP and supported by CMS and ATLAS in di-photon, $ττ$, and $W^+ W^-$ channels, motivate exploring its discovery potential at future electron-positron colliders. This study focuses on the production of the new scalar ($S$) via $e^+ e^- \rightarrow ZS $ with $Z \rightarrow μ^+ μ^- $ and $S \rightarrow b \bar{b}$ and optimizes the signal recognition using the recoil-mass method. By employing deep neural networks for signal-background discrimination, we demonstrate that a 95\,GeV scalar, mixing with the Standard Model Higgs by an angle of $\sim$0.1, can be observed with a 5$σ$ significance at $\sqrt{s}$ = 250\,GeV or 200\,GeV with 5~ab$^{-1}$ of integrated luminosity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑