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Experimental Particle and Astro-Particle Physics Seminar
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Europe/Zurich
Description
Abstract: The observation of Higgs boson pair production (HH) is a key milestone in the LHC physics programme. HH production provides access to the Higgs boson self-coupling and, consequently, to the underlying structure of the Higgs potential, representing a fundamental step in the study of the electroweak symmetry breaking mechanism.
Because of its small cross section, this process has long been considered beyond the reach of the LHC. However, thanks to the remarkable progress of HH analyses over the past decade, HH production is now being explored in several production and decay modes, setting stringent constraints on new physics and rapidly approaching the sensitivity required to probe the Standard Model prediction.
HH production can also serve as a probe of new physics, both through direct searches for new resonances decaying into Higgs boson pairs and through the study of deviations in HH production within the framework of effective field theories.
This seminar will present an overview of HH analyses and discuss the main legacy results from the LHC Run 2, the recent results based on a subset of the LHC Run 3 data, and the prospects for the study of HH at the HL-LHC.