Speaker
Description
The shape of the Higgs boson potential can be accessed by measuring the trilinear self coupling, which is the only direct way to probe the mechanism of electroweak symmetry breaking and the stability of the Higgs potential. A search for non-resonant Higgs boson pair production via gluon-gluon and vector boson fusion processes in final states with two bottom quarks and two photons is presented, which is one of the most sensitive channels for HH production at the Large Hadron Collider. The H→bb decay provides a high statistical yield, while the H→γγ decay offers a significant mass resolution. We can directly access trilinear self-coupling and the coupling between Higgs bosons and vector bosons. This analysis using Compact Muon Solenoid Run-2 data is improved by a factor of four compared to previous results, benefiting from the larger statistics and the multivariate techniques to suppress backgrounds. The limits on the product of cross section and branching fraction as a function of different coupling constants are derived.
