26-30 July 2021
Zoom
Europe/Berlin timezone

Determination of proton parton distribution functions using ATLAS data

26 Jul 2021, 17:15
15m
Zoom

Zoom

Parallel session talk QCD and Hadronic Physics T06: QCD and Hadronic Physics

Speaker

Claire Gwenlan (Oxford)

Description

We present fits to determine parton distribution functions (PDFs) using inclusive W/Z-boson measurements from the ATLAS experiment at the LHC. The ATLAS measurements are used in combination with deep-inelastic scattering data from HERA. We also present the results of PDF fits that use W/Z+jets measurements from ATLAS in addition to the measurements listed above. An improved determination of the sea-quark densities at high Bjorken, x, is seen, while confirming a strange-quark density similar in size to the up- and down-sea-quark densities in the range x < 0.02 found by previous ATLAS analyses. If available, PDF fits including inclusive W and Z boson production, ttbar production, W+jets and Z+jets production, inclusive jet production and direct photon production will also be presented.

First author Lidija Zivkovic
Collaboration / Activity ATLAS
Email Lidija.Zivkovic@cern.ch

Primary authors

Presentation Materials