# New Physics in multi-Higgs boson final states

## TL;DR

This paper investigates the potential to discover triple-Higgs signals at a 100 TeV collider, considering Standard Model and new physics effects via effective operators, and evaluates the challenges and prospects for detection.

## Contribution

It introduces a comprehensive analysis of triple-Higgs production including new physics effects, proposing benchmark points for future collider measurements.

## Key findings

- Standard Model triple-Higgs production is challenging at detector level.
- New physics operators can significantly enhance the signal.
- Proposed benchmarks facilitate future experimental searches.

## Abstract

We explore the potential for the discovery of the triple-Higgs signal in the $2b2l^{\pm}4j+E\!\!\!/$ decay channel at a $100$ TeV hadron collider. We consider both the Standard Model and generic new-physics contributions, described by an effective Lagrangian that includes higher-dimensional operators. The selected subset of operators is motivated by composite-Higgs and Higgs-inflation models. In the Standard Model, we perform both a parton-level and a detector-level analysis. Although the parton-level results are encouraging, the detector-level results demonstrate that this mode will be really challenging. However, sizable contributions from new effective operators can largely increase the cross section and/or modify the kinematics of the Higgs bosons in the final state. Taking into account the projected constraints from single and double Higgs-boson production, we propose benchmark points in the new physics models for the measurement of the triple-Higgs boson final state for future collider projects.