Speaker
Description
In this talk, I will discuss the growing importance of controlling high-energy logarithms in predictions for LHC processes. In a recent ATLAS measurement [arXiv:2403.02793], state-of-the-art matched parton-shower predictions for a hard photon or an electroweak
vector boson in association with at least two jets (pp→{γ,Z,W}+jj) deviate systematically from data as the partonic collision energy grows. This effect is due to the dominance of high-energy logarithms, which spoil the convergence of the fixed-order perturbative series and
are captured to all orders by the framework of High Energy Jets. I will present new results for Z+dijets, which show that all-order resummation resolves the discrepancies. I will also highlight the importance of high-energy logarithms in Higgs boson plus quark-pair
production as a background to di-Higgs searches, and in isolated photon plus jets production.