Higgs pair production at the LHC and beyond

Wednesday 7 May 2025, 16:00 → 17:00 Europe/London

Berry Lecture Theatre

Agni Bethani (Universite Catholique de Louvain (UCL) (BE))

The HH production allows us to access the Higgs trilinear self-coupling, it is therefore a key element in understanding the structure of the Higgs potential. Measuring the Higgs self-coupling will be one of the most important results from the LHC since the Higgs discovery, with wider consequences in particle physics and cosmology.
I will present the current status of HH searches at the LHC, highlighting the most recent results from ATLAS and CMS. Emphasis will be placed on the results combining multiple final states, the limits on the HH production cross section and the constraints on the Higgs self-coupling. In addition to Standard Model measurements, I will discuss how current results are used to probe a range of BSM scenarios, including resonant and non-resonant new physics contributions. Looking ahead, I will outline the prospects for HH measurements at the High-Luminosity LHC (HL-LHC), where the substantial increase in integrated luminosity is expected to significantly enhance the reach for HH production.

16:00 → 17:00 Seminar¶

Zoom room

Speaker: Agni Bethani (Universite Catholique de Louvain (UCL) (BE))

LHC_HH_seminar2025.pdf