Probing proton structure at the Large Hadron electron Collider
For the foreseeable future, the exploration of the high-energy frontier will be the domain of the Large Hadron Collider (LHC).Of particular significance will be its high-luminosity upgrade (HL-LHC), which will operate until the mid-2030s.In this endeavour, for the full exploitation of the HL-LHC physics potential an improved understanding of the pa