$hh+\text{jet}$ production at 100 TeV

TL;DR

This paper analyzes the potential of $hh+jet$ production at a future 100 TeV collider, focusing on Higgs pair decay channels to improve sensitivity to the Higgs self-coupling.

Contribution

It provides a comparative analysis of $hh+jet$ production at 100 TeV, highlighting the sensitivity of specific decay channels to the Higgs self-coupling.

Findings

$hh o bar b au^+ au^-$ channel can constrain the Higgs self-coupling to 8%

Boosted regime analysis enhances sensitivity to Higgs self-coupling

Including $hh+jet$ improves collider sensitivity to Higgs properties

Abstract

Higgs pair production is a crucial phenomenological process in deciphering the nature of the TeV scale and the mechanism underlying electroweak symmetry breaking. At the Large Hadron Collider, this process is statistically limited. Pushing the energy frontier beyond the LHC's reach will create new opportunities to exploit the rich phenomenology at higher centre-of-mass energies and luminosities. In this work, we perform a comparative analysis of the $hh+\text{jet}$ channel at a future 100 TeV hadron collider. We focus on the $hh\to b\bar b b\bar b$ and $hh \to b\bar b \tau^+\tau^-$ channels and employ a range of analysis techniques to estimate the sensitivity potential that can be gained by including this jet-associated Higgs pair production to the list of sensitive collider processes in such an environment. In particular, we observe that $hh \to b\bar b \tau^+\tau^-$ in the boosted regime exhibits a large sensitivity to the Higgs boson self-coupling and the Higgs self-coupling could be constrained at the 8\% level in this channel alone.