Speaker
Description
Indirect searches for new physics at the LHC and future colliders rely on Effective Field Theories such as the SMEFT. However, recent studies indicate that global fits of Parton Distribution Functions (PDFs) can fully or partially absorb signs of new physics in the high-energy tails of HL-LHC measurements.
In this talk, after a general introduction, I show how future deep-inelastic scattering measurements at the EIC can provide complementary constraints on large-x sea quarks. These constraints can then be incorporated into PDF determinations used in the interpretation of HL-LHC data. This approach helps break degeneracies between PDF and SMEFT parameters, thereby improving the robustness of indirect new physics searches at hadron colliders.