# Showcasing HH production: Benchmarks for the (HL-)LHC

## TL;DR

This paper develops benchmark scenarios for BSM di-Higgs production at the LHC, emphasizing non-SM signatures and multi-fermion channels to guide future experimental searches for new physics.

## Contribution

It introduces signature-driven benchmark points for resonant and non-resonant BSM di-Higgs production, focusing on multi-Higgs final states and their unique kinematic features.

## Key findings

- Proposes benchmark points for BSM di-Higgs signatures
- Highlights the importance of multi-Higgs final states in BSM searches
- Provides guidance for experimental analyses targeting new physics

## Abstract

Current projections suggest that the LHC will have only limited sensitivity to di-Higgs production in the Standard Model (SM), possibly even after the completion of its high luminosity phase. Multi-Higgs final states play a fundamental role in many extensions of the SM as they are intrinsically sensitive to modifications of the Higgs sector. Therefore, any new observation in multi-Higgs final states could be linked to a range of beyond the SM (BSM) phenomena that are not sufficiently addressed by the SM. Extensions of the Higgs sector typically lead to new phenomenological signatures in multi-Higgs final states that are vastly different from the SM expectation. In this work, we provide a range of signature-driven benchmark points for resonant and non-resonant BSM di-Higgs production that motivate non-SM kinematic correlations and multi-fermion discovery channels. Relying on theoretically well-motivated assumptions, special attention is devoted to the particular case where the presence of new physics will dominantly manifest itself in multi-Higgs final states.