This talk presents recent data from ATLAS, CMS and LHCb that is sensitive to the proton parton distribution functions (PDFs), including inclusive W and Z boson production, ttbar production, W+jets and Z+jets production, inclusive jet production and direct photon production. The data are used in combination with deep-inelastic scattering data from HERA to extract the PDFs themselves, together with a full assessment of the uncertainties.
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