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Louis D'Eramo, "Are pair of Higgs bosons more interesting than just one?"


The current description of the electroweak symmetry breaking relies on a Higgs field associated with an additional potential term in the SM Lagrangian. That mechanism is an extraordinary but yet puzzling fundamental piece explaining the mass of elementary particles. The discovery of the Higgs boson at the LHC was the first milestone to confirm this theory, measuring one of the free parameters introduced. Since then, most of the predicted couplings of this boson to SM particles have been measured, and are in excellent agreement with the theoretical predictions. Nowadays, more attention has been raised on measuring the second free parameter: the Higgs self-interaction. 
In this regard, the Higgs pair production is particularly sensitive to this coupling, while presenting a stimulating challenge due to the limited statistics available. In this talk, I present recent results from the ATLAS collaboration on measurements of HH production as predicted by the Standard Model and its possible enhancement through coupling modification or with the search for beyond-SM physics involving resonances producing HH pairs.

The agenda of this meeting is empty