Maria Cepeda (Ciemat)

Higgs Physics at Future Colliders

Abstract: One of the central goals of the physics program at the Large Hadron Collider is the study of the origin of electroweak symmetry breaking. The upgrade of the LHC to a High Luminosity Machine (HL-LHC) at 14 TeV center-of-mass energy, expected to collect 3 ab^-1 of proton-proton collision data, will provide an extensive data sample with which to characterize the properties of the Higgs boson with unprecedented precision. In this seminar, I will present the state-of-the-art expected sensitivities of Higgs boson measurements at the HL-LHC, which combine the potential of ATLAS and CMS and take into account future upgraded detector performance and foreseen theoretical developments. Going beyond the HL-LHC era, I will discuss the prospects for Higgs precision studies at future lepton and hadron colliders, with a comparative analysis of the proposals submitted to the European Strategy Update process. This study was first presented during the Open Symposium in Granada in May 2019, and it has been since updated with the feedback received from the future collider community.