The Higgs Potential: From the Energy Frontier to a Precision Future

by Elizabeth Brost (Brookhaven National Laboratory)

Tuesday 3 Mar 2026, 15:30 → 16:30 US/Eastern

Large Seminar Room

The 2012 discovery of the Higgs boson at the Large Hadron Collider (LHC) completed the particle content of the Standard Model. However, discovering the particle was only the first step: the dynamics of the Higgs potential—encoded in its self-coupling—remained experimentally inaccessible. Measuring this self-coupling is essential for understanding the electroweak phase transition in the early universe, making it one of the defining challenges of high-energy physics.

In this colloquium, I will outline the roadmap to measuring the Higgs self-coupling through the production of Higgs boson pairs (HH). I will present the latest results from the ATLAS experiment, including our Run 2 HH combination that provides the world's most stringent constraints on the Higgs self-coupling. I will then discuss the transition to the High-Luminosity LHC (HL-LHC) era, highlighting the critical technical innovations in trigger and data acquisition required to capture this rare process. Finally, I will look beyond the LHC to the proposed Future Circular Collider (FCC). I will discuss how our current work paves the way for this next-generation facility, describing the unique capabilities of an e+e− Higgs factory to provide the ultimate precision measurements of the electroweak sector.

 

 

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