Speaker
Description
Di-Higgs (HH) production provides valuable information about loosely constrained quantities of the Higgs potential, such as the Higgs trilinear self-coupling. The measurement of these properties can confirm SM predictions or point to BSM physics, where non-resonant HH production is typically described by Effective Field Theories (EFTs).
The event-level reweighting consists of parameterizing the HH cross section in terms of the EFT parameters appearing in the squared matrix element, and then performing a fit to obtain an analytical formula for the cross section. In this way, each point in parameter space can be described without the need for Monte Carlo event generation. This approach is particularly useful for probing such large parameter spaces.
We discuss new formulas for both HEFT and SMEFT at 13 and 13.6 TeV, and the impact of higher dimensional formulas and its effects on the reweighting of NLO QCD gluon fusion samples.
