Multi-boson splashes at future colliders from electroweak compositeness

Abstract

We propose a new collider signature for the composite origin of the electroweak symmetry breaking of the standard model. The Higgs sector consists of new fundamental fermions (hyper-quarks), which confine at a hadronization scale $Λ_{HC} \sim$ few TeV. At energies above $Λ_{HC}$, the Drell-Yan production of the hyper-quarks leads to the production of a few electroweak bosons, in analogy with hadron production in QCD at $e^+e^- \to q\bar{q}$ around a few GeV. We show that this regime can be probed at future colliders, namely the proposed 100 TeV hadron collider (FCC-hh) and a 10 TeV muon collider. Together with the direct discovery of electroweak resonances, the multi electroweak boson signature provides a smoking gun for Higgs compositeness.

Figures (4)

• Figure 1: Final state EW-boson multiplicity. Left:Distribution at FCC-hh for $\sqrt{\hat{s}_{min}} = 4$ TeV (red) and $\sqrt{\hat{s}_{min}} = 10$ TeV (blue). Right: Comparison between the FCC-hh at $\sqrt{\hat{s}_{min}} = 10$ TeV (green) and a muon collider at fixed $\sqrt{\hat{s}} = 10$ TeV (orange)
• Figure 2: Leading $p_{T}$ distribution of the EW-bosons (signal), and the three and four SM bosons for FCC-hh(left) and muon collider(right).
• Figure 3: Variation of $\mathit{Z}$ (signal sensitivity) with $\Lambda_{\mathit{HC}}$ for fixed $\sqrt{\hat{s}_{min}}/\Lambda_{\mathit{HC}}$ ratio.
• Figure 4: Visualization of signal in the form of jets with $R = 1$ and represented by closed red contours.