PDF analysis of Z boson polarisation data from LHC and constraints on Higgs boson production cross section

Abstract

We study the effect on the parton distribution functions (PDFs) from the inclusion of projected measurements in the Drell-Yan (DY) di-lepton production neutral channel of the angular coefficient associated to the $Z$-boson longitudinal polarisation. The pseudodata, generated assuming two luminosity scenarios, is employed for the profiling of existing PDF sets using the open-source platform xFitter. We find the observable particularly relevant in constraining the gluon PDF, which in turn translates into a reduction of the systematic uncertainties of the Standard Model (SM) Higgs boson production cross section.

Comments: 6 pages, 4 figures, Contribution to the Proceedings for the EPS-HEP2021 conference, University of Hamburg and DESY, Germany, 26-30 July 2021