TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.16.4.112
TI  - Quantum collider probes of the fermionic Higgs portal
PY  - 2024/04/25
UR  - https://scipost.org/SciPostPhys.16.4.112
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 16
IS  - 4
SP  - 112
A1  - Haisch, Ulrich
AU  - Ruhdorfer, Maximilian
AU  - Schmid, Konstantin
AU  - Weiler, Andreas
AB  - We explore the sensitivity of future hadron colliders to constrain the fermionic Higgs portal, with a focus on scenarios where the new fermions cannot be directly observed in exotic Higgs decays. This portal emerges in various models including twin-Higgs scenarios and dark matter models, posing significant challenges for collider tests. Working in an effective field theory (EFT), we determine the reach of the high-luminosity option of the Large Hadron Collider (HL-LHC), the high-energy upgrade of the LHC (HE-LHC) and a proposed Future Circular Collider (FCC) in probing the fermionic Higgs portal through off-shell and double-Higgs production. Notably, we find that quantum-enhanced indirect probes offer a better sensitivity than other direct Higgs measurements. We argue that this finding is valid in a wide class of ultraviolet realisations of the EFT. Our study presents a roadmap of a multifaceted search strategy for exploring the fermionic Higgs portal at forthcoming hadron machines.
ER  -

@Article{10.21468/SciPostPhys.16.4.112,
	title={{Quantum collider probes of the fermionic Higgs portal}},
	author={Ulrich Haisch and Maximilian Ruhdorfer and Konstantin Schmid and Andreas Weiler},
	journal={SciPost Phys.},
	volume={16},
	pages={112},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.16.4.112},
	url={https://scipost.org/10.21468/SciPostPhys.16.4.112},
}