QCD@LHC 2026

Analaysis of the impact on data uncertanties with the MSHT framework

Not scheduled

20m

University of Oxford

Standard slot PDFs and DIS PDFs and DIS

Speakers

Dr Lucian Alexander Harland-Lang (University College London)Dr Matthew Reader (University College London) Robert Samuel Thorne (University College London (UK)) Thomas Cridge (University of Manchester)

Description

We investigate the impact of modifications to the standard approach to data uncertainties in PDF fits in the context of the MSHT framework. We consider the potential for ``errors on errors'' and the consequence of this in data distributions and in fitting procedures. We also consider the degree of correlation in the treatment of correlated systematic uncertainties, and introduce a novel technique for relaxing the correlations on uncertainties determined by modelling in a physically motivated manner. We look at the impact on LHC data, with a particular emphasis on recent jet and dijet data from ATLAS and CMS.