1pm - 2pm: Top-Yukawa- and light-quark-induced electroweakcorrections to Higgs-Pair Production via Gluon Fusion

Gluon fusion, gg→HH, is the dominant Higgs-pair production process at the Large HadronCollider (LHC) with direct sensitivity to the trilinear Higgsself-interaction. The process is loop-induced, with the leading contribution arising from top-quark loops in the Standard Model, and QCD corrections are known to enhance the cross section significantly. With the anticipated accuracies achievable at the high-luminosity LHC(HL-LHC), the theoretical uncertainties will be of increased relevance to compete with the experimental precision at the level of less than 30%. Therefore, as a first step in this direction, we compute next-to-leading-order electroweak contributions to gg→HHfrom two sources: top-Yukawa–induced and light-quark–induced effects. I will present their impact on the total cross section and on the Higgs-pair invariant-mass spectrum, highlighting threshold features and the kinematic regions where electroweak effects reach the few-to-ten per cent level.