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Bound States via Higgs Exchanging and Resonant Di-Higgs

Abstract

The standard model (SM)-like Higgs boson hh has spin zero and light mass around weak scale, so it has the potential to mediate a new and relatively strong force for the particle Ï•\phi in the new physics (NP) sector; then Ï•\phi may form bound state BhB_h via exchanging hh. This phenomena may arise in a wide context, for instance composite Higgs, supersymmetry (SUSY) and radiative neutrino (or more widely in the models with a strong Higgs portal for triggering classical scale symmetry breaking or strong first-order phase transition). For illustration we focus on two typical examples, the stop/sbottom sector and an inert Higgs doublet. Furthermore, we point out that BhB_h must give rise to a clear resonant di-Higgs signature, which recently has been extensively searched for at the large hadron collider (LHC). Moreover, Higgs radiative decay such as to di-photon probably will be significantly modified provided that Ï•\phi is charged or/and colored.Comment: PLB version with minor correction

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