发表机构
Shiv Nadar IoE Deemed to be University; Henan Normal University（希夫·纳达尔卓越学院 deemed大学; 河南师范大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文利用量子纠缠度量研究门户介导散射中的SMEFT扩展，通过构建末态密度矩阵捕获线性干涉贡献，为探测新物理尺度提供更高灵敏度。
AI 中文摘要
我们从量子纠缠的角度研究标准模型有效场论（SMEFT）在门户介导散射过程中的扩展。量子信息度量保持相位敏感的自旋和动量关联，而传统的对撞机和直接探测观测量主要依赖于非极化截面和事件率，这些往往抑制了维度-六干涉项或对内部自由度进行平均。我们通过构建基于螺旋度振幅的末态密度矩阵，评估由高维算子插入引起的线性和冯·诺依曼熵涨落。通过避免传统的运动学简并，我们的公式表明纠缠度量能够线性地捕获$1/\Lambda^2$阶的干涉贡献，从而对新物理尺度提供更高的灵敏度。这种信息论方法为SMEFT Wilson系数建立了理论框架，为高能和天体粒子物理学中基本相互作用的精确测试创造了新的机会。
英文摘要
We study Standard Model Effective Field Theory (SMEFT) extensions in portal-mediated scattering processes from the perspective of quantum entanglement. Quantum information metrics maintain phase-sensitive spin and momentum correlations, whereas conventional collider and direct detection observables mainly depend on unpolarized cross-sections and event rates, which often suppress dimension-six interference terms or average over internal degrees of freedom. We assess linear and Von Neumann entropy fluctuations induced by higher-dimensional operator insertions by building final-state density matrices using helicity amplitudes. By avoiding conventional kinematic degeneracies, our formulation shows that entanglement measures capture interference contributions linearly in $1/Λ^2$, offering improved sensitivity to new physics scales. A theoretical framework for SMEFT Wilson coefficients is established by this information-theoretic method, creating new opportunities for accurate tests of fundamental interactions in high-energy and astroparticle physics.
Comments14 pages
