Etude de l’auto-couplage du Higgs / Study of the Higgs self-coupling

Personnes impliquées / People involved

Actuellement / current members

D. Boumediene (responsable / leader)   L. D’Eramo   O. Perrin   A. Lafarge  

Anciens / former members

N. Agaras   A. Burger  

Activity description

Probing the Higgs self-coupling through double Higgs production at the LHC

Understanding and testing experimentally the relation between λ and the Higgs boson mass, mH, will provide an excellent insight into the fundamental nature of the Higgs particle. This test is performed by measuring λ independently from the Higgs mass. The value of the Higgs self-coupling is at the core of a challenging experimental program. In order to achieve sensitivity to this signal, a large number of signatures are considered. They arise from the various Higgs boson pair decays. One of them is the so-called multilepton signature. Based on a long-standing experience from ttH search with these signatures (Etude du couplage top-Higgs / Study of the top-Higgs coupling) the team is currently involved in searching for Higgs pairs using the full Run 2 data set.