发表机构
RWTH Aachen University; PSI Center for Neutron and Muon Sciences; Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern（亚琛工业大学; 瑞士保罗谢尔研究所中子与μ子科学中心; 伯尔尼大学爱因斯坦基础物理中心理论物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文介绍一个基于Matchete的工具，自动生成UFO文件以连接BSM拉格朗日量与事件生成器，并提供了标准模型EFT到维度八的完整实现。
AI 中文摘要
我们提出一个工具，用于自动生成通用费曼输出（UFO）文件，该文件被许多事件生成器用作输入，适用于通用的超越标准模型（BSM）理论及其低能有效场论（EFT）描述。基于Matchete包，该包提供了定义BSM模型并通过匹配推导其EFT的便捷接口，我们的扩展在电弱对称性破缺相中获得拉格朗日量，执行自动规范固定，计算所有费曼规则，施加味对称性，并以UFO格式导出模型。这显著简化了BSM和EFT分析，我们通过一个多通道轻子夸克搜索的EFT有效性研究加以说明。作为应用，我们使用$M_W$电弱输入方案，提供了标准模型EFT到维度八的完整UFO实现。
英文摘要
We present a tool for the automated generation of Universal Feynman Output (UFO) files, used as input by many event generators, for generic Beyond the Standard Model (BSM) theories and their low-energy Effective Field Theory (EFT) descriptions. Building on the Matchete package, which provides a convenient interface for defining BSM models and deriving their EFTs via matching, our extension obtains the Lagrangian in the broken phase of the electroweak symmetry, performs automatic gauge fixing, computes all Feynman rules, imposes flavor symmetries, and exports the model in the UFO format. This significantly streamlines BSM and EFT analyses, as we illustrate with an EFT validity study for a multi-channel leptoquark search. As an application, we provide a complete UFO implementation of the Standard Model EFT up to dimension eight using the $M_W$ electroweak input scheme.
Comments61 pages, 14 figures, UFO files available at https://gitlab.com/matchete/model-database/-/tree/master/UFO-models, code available at https://matchete.gitlab.io
