发表机构
Ankara University; Usak University（安卡拉大学; 乌萨克大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究利用有效场论框架，通过未来缪子对撞机中的子过程μ⁻γ→μ⁻νν̄探测陶中微子反常磁矩，采用等效光子近似和多种模拟工具，在30 TeV质心能量下实现5σ灵敏度达5.21×10⁻⁸μ_B，较DONUT实验极限改善一个数量级。
AI 中文摘要
我们在模型无关的有效场论框架内，研究了未来缪子对撞机对陶中微子反常磁矩的灵敏度。该分析通过子过程$\mu^{-}\gamma \rightarrow \mu^{-}\nu\bar{\nu}$进行，其中初始态光子采用等效光子近似描述。信号和本底事件使用MadGraph5$\\_$aMC$@$NLO生成，随后用PYTHIA8进行部分子簇射和强子化。探测器效应使用DELPHES3模拟，而事件重建和分析则通过MadAnalysis5框架完成。针对质心能量为3、10和30 TeV的缪子对撞机，确定了优化的运动学选择条件。预期灵敏度采用Asimov显著性方法评估。最佳灵敏度在30 TeV缪子对撞机方案中获得，在假设1%系统不确定性的情况下，陶中微子反常磁矩可在5$\sigma$显著性水平下探测至$\mu_{\tau\tau}=5.21\times10^{-8}\\,\mu_B$。我们的灵敏度界限将DONUT合作组报告的当前直接实验极限改善了一个数量级，并展示了未来缪子对撞机在探测中微子电磁相互作用方面的巨大潜力。
英文摘要
We investigate the sensitivity of future muon colliders to the anomalous magnetic moment of the tau neutrino within a model-independent effective field theory framework. The analysis is performed through the subprocess $μ^{-}γ\rightarrow μ^{-}ν\barν$ where the initial-state photon is described using the Equivalent Photon Approximation. Signal and background events are generated with MadGraph5$\_$aMC$@$NLO, followed by parton showering and hadronization with PYTHIA8. Detector effects are simulated using DELPHES3, while the event reconstruction and analysis are carried out via the MadAnalysis5 framework. Optimized kinematic selection criteria are determined for center-of-mass energies of 3, 10 and 30 TeV muon colliders. The expected sensitivities are evaluated using the Asimov significance method. The best sensitivity is obtained for the 30 TeV muon collider option, where the anomalous magnetic moment of the tau neutrino can be probed down to $μ_{ττ}=5.21\times10^{-8}\,μ_B$ at the 5$σ$ significance level assuming a 1\% systematic uncertainty. Our sensitivity bounds improve the current direct experimental limit reported by the DONUT Collaboration up to one order of magnitude and demonstrate the strong potential of future muon colliders for probing neutrino electromagnetic interactions.
Comments15 pages, 5 figures
