Bound States via Higgs Exchanging and Resonant Di-Higgs

Abstract

The standard model (SM)-like Higgs boson $h$ 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 $\varphi$ in the new physics (NP) sector; then $\varphi$ may form bound state $B_h$ via exchanging $h$. 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 $B_h$ 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 $\varphi$ is charged or/and colored.

PLB version with minor corrections

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• Thermal Relic of Self-Interacting Dark Matter with Retarded Decay of Mediator
• Resonant Higgs pair production as a probe of stop at the LHC
• Calculating $p$-values and their significances with the Energy Test for large datasets
• Search for $CP$ violation in $D_{(s)}^{+}\to K^{-}{K}^{+}{K}^{+}$ decays
• Search for $\text{CP}$ violation in the phase space of $D^0\to K_S^0{K}^{\pm }{\pi }^{\mp }$ decays with the energy test
• Bound States of Right-handed Sneutrino Dark Matter