The inclusion of theory errors in PDF fits

Q4 Physics and Astronomy

Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI:10.1016/j.nuclphysbps.2023.11.002

Andrea Barontini , NNPDF collaboration

引用次数: 0

Abstract

We present ongoing work towards incorporating the missing higher-order uncertainty (MHOU) determined through scale variations in the assessment of parton distribution functions (PDFs). Our PDFs fitting employs the NNPDF4.0 methodology and our theory covariance matrix framework to account for theory errors. This approach relies on the integration of MHOUs and their correlations via a theory covariance matrix. We validate our estimation and assess the impact of theory errors on the PDFs and on LHC phenomenology.

查看原文本刊更多论文

在 PDF 拟合中加入理论误差

我们介绍了为将通过尺度变化确定的缺失高阶不确定性（MHOU）纳入粒子分布函数（PDF）评估而正在开展的工作。我们的粒子分布函数拟合采用了 NNPDF4.0 方法和理论协方差矩阵框架，以考虑理论误差。这种方法依赖于通过理论协方差矩阵整合 MHOU 及其相关性。我们验证了我们的估计，并评估了理论误差对 PDFs 和大型强子对撞机现象学的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nuclear and Particle Physics Proceedings Physics and Astronomy-Nuclear and High Energy Physics

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： Nuclear and Particle Physics Proceedings is the premier publication outlet for the proceedings of key conferences on nuclear and high-energy physics and related areas. The series covers both large international conferences and topical meetings. The newest discoveries and the latest developments, reported at carefully selected meetings, are published covering experimental as well as theoretical particle physics, nuclear and hadronic physics, cosmology, astrophysics and gravitation, field theory and statistical systems, and physical mathematics.