SIMUnet:一个开源工具,可以同时实现 EFT 威尔逊系数和 PDF 文件的全局匹配
, Mark N Costantini1, Elie Hammou1
1DAMTP, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA UK.
The European physical journal. C, Particles and fields
|September 26, 2024
概括
我们介绍SIMUnet,这是一个开源工具,用于拟合标准模型有效场理论 (SMEFT) 参数和Parton分布函数 (PDF). 这个代码可以同时分析新的物理效应和质子结构,增强粒子物理学研究.
科学领域:
- 高能物理 高能物理
- 量子场理论 量子场理论
- 粒子物理学 粒子物理学
背景情况:
- 标准模型有效场理论 (SMEFT) 扩展了标准模型 (SM) 以纳入潜在的新物理效应.
- 精确确定Parton分布函数 (PDF) 对于解释高能散射数据至关重要.
- 现有的分析工具通常会单独对待SMEFT参数拟合和PDF确定.
研究的目的:
- 介绍SIMUnet,这是一个新的开源计算工具,用于在SMEFT框架内执行全球匹配.
- 为了使SMEFT威尔逊系数和质子PDF文件同时安装.
- 研究新物理学与质子内部结构之间的相互作用.
主要方法:
- SIMUnet是建立在已建立的NNPDF (神经网络共享分发功能) 框架之上.
- 它结合了PDF依赖和PDF独立的可观测值,以进行全面的分析.
- 该代码允许安装任意数量的SMEFT自由度.
主要成果:
- 介绍了SMEFT威尔逊系数的新全球分析,考虑它们与PDF文件的相互作用.
- 该分析结合了LHC Run II顶夸克数据,希格斯生成/衰变速率以及LEP和LHC的精确电弱/二博子测量.
- 证明了SIMUnet在全球PDF中适应新的物理效应的能力.
结论:
- SIMUnet提供了一个强大而灵活的平台,用于推进SMEFT和PDF的全球分析.
- 该工具有助于更深入地了解与标准模型的潜在偏差及其对质子结构的影响.
- 本次分析通过结合各种实验数据集,为SMEFT参数提供了最新的约束.
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