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We study the enhancement of the di-Higgs production cross section resultingfrom the resonant decay of a heavy Higgs boson at hadron colliders in a modelwith a Higgs singlet. This enhancement of the double Higgs production rate iscrucial in understanding the structure of the scalar potential and we determinethe maximum allowed enhancement such that the electroweak minimum is a globalminimum. The di-Higgs production enhancement can be as large as a factor of ~18 (13) for the mass of the heavy Higgs around 270 (420) GeV relative to theStandard Model rate at 14 TeV for parameters corresponding to a globalelectroweak minimum.

Exploring Resonant di-Higgs production in the Higgs Singlet Model