Revisiting the $t\bar{t}hh$ channel at the FCC-hh

Abstract

The exploration of the scalar sector of the Standard Model is at the core of current and future science programs at collider experiments, with increasing focus on the self-interaction of the Higgs boson. This important parameter of the Higgs sector can be measured in various channels, among the production of a Higgs boson associated with a top-quark pair, $\bar{t}thh$. In this paper we study this channel and its potential to measure or constrain the self-coupling and possible new physics contributions at a future 100 TeV proton-proton collider. Analysing this highly complex final state adds to the sensitivity for enhanced self-coupling interactions, and we argue that a measurement of this process is a necessity to constrain blind directions in the multi-dimensional parameter space of well-motivated new physics scenarios.

v2; 11 pages, 4 figures and 5 tables; Matches version published in PRD; Some extra explanations and numbers; Conclusions unchanged

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Cited by in corpus (12)

• Collider Physics at the Precision Frontier
• Higgs boson potential at colliders: status and perspectives
• Measuring the Higgs self-coupling via Higgs-pair production at a 100 TeV p-p collider
• Phenomenology of GUT-inspired gauge-Higgs unification
• Probing the Symmetric Higgs Portal with Di-Higgs Boson Production
• Prospects of non-resonant di-Higgs searches and Higgs boson self-coupling measurement at the HE-LHC using machine learning techniques
• Sensitivity reach on anomalous Higgs couplings via triphoton production for the post-LHC circular high-energy hadron colliders
• Multi-Higgs Boson Probes of the Dark Sector
• Prospects for exotic $h\to 4\tau$ decays in single and di-Higgs boson production at the LHC and future hadron colliders
• Anatomy of the $tthh$ Physics at HL-LHC
• An EFT study of the $pp\to \bar{t}tZ(ll)h(bb)$ process at the FCC-$\mathbf{hh}$
• Exploring Higgs EFT in $t\bar{t}hh$ at High Luminosity LHC