During the ten years elapsed since the Higgs boson discovery, great progress has been made in precisely establishing its properties. The Higgs self-coupling however remains largely unconstrained by the current experimental measurements and improving its determination is a major challenge for collider physics in the coming decades. In this Collider Cross Talk, we will delve on Higgs pair production at the LHC as a probe for the trilinear Higgs self-coupling, discussing recent experimental progresses as well as the challenges ahead. Future prospects will be also outlined, and BSM implications presented.
Alessandra Betti is a research assistant professor at Sapienza University of Rome, working on the ATLAS experiment. She obtained her PhD at the University of Bonn in 2019 with a thesis on the “Search for the Standard Model Higgs boson pair production and new physics phenomena in the bbττ final state with the ATLAS detector”. After her PhD, she continued working on di-Higgs searches in the bbττ and bbbb decay channels and on the di-Higgs and single-Higgs combinations for constraining the Higgs self-coupling. Currently, she is one of the coordinators of the ATLAS di-Higgs searches.
Gauthier Durieux is a fellow of CERN's theory department, interested in physics beyond the standard model, effective field theories, present and future collider phenomenology, in particular in the top and Higgs sectors. He obtained his PhD at UCLouvain in 2014, did postdocs at Cornell, DESY, and the Technion, before reaching CERN in 2020. Next fall, he will get back to UCLouvain as a research associate of the FNRS science foundation. He is currently a convener of the LHC EFT working group, and of the FCC Higgs physics programme.