Di-Higgs resonance searches in weak boson fusion

TL;DR

This paper highlights the importance of including weak boson fusion processes in di-Higgs resonance searches at the LHC, especially for iso-singlet mixing scenarios, to improve discovery potential.

Contribution

It demonstrates that weak boson fusion can significantly aid in discovering resonant structures in the Higgs sector, which was previously underutilized.

Findings

Weak boson fusion contributes to di-Higgs resonance signals.

Including both gluon fusion and weak boson fusion enhances search sensitivity.

Resonant structures from iso-singlet mixing are better detected with combined channels.

Abstract

The search for di-Higgs final states is typically limited at the LHC to the dominant gluon fusion channels, with weak boson fusion only assuming a spectator role. In this work, we demonstrate that when it comes to searches for resonant structures that arise from iso-singlet mixing in the Higgs sector, the weak boson fusion sideline can indeed contribute to winning the discovery game. Extending existing experimental resonance searches by including both contributions is therefore crucial.