PreprintCC BY 4.0arXiv
Dark photons in exotic Higgs boson decays at FCC-ee
Abstract
A prospective search for dark photons decaying into collimated, displaced muon pairs is presented for the electron-positron stage of the Future Circular Collider, FCC-ee. Assuming the full luminosity of the Higgs run at 240 GeV, the study probes a broad range of dark photon masses and couplings. The signature comprises two jets from a Z boson decay and two muon pairs from dark photons produced in Higgs decays. A kinematics-based selection achieves zero background while retaining high signal efficiency. Expected limits are set on the Higgs boson branching ratio to dark photons as a function of the dark photon mass and coupling.
Related
- Search for dark photons from Higgs boson decays in the gluon-gluon fusion channel in proton-proton collisions at √s=13.6 TeV with the ATLAS detector
- Search for dark photons from Higgs boson decays in the gluon-gluon fusion channel in proton-proton collisions at √s=13.6 TeV with the ATLAS detector
- Dark photon and U(1)B−L gauge boson from dark Higgs boson decays at FASER and SHiP
- Probing Massive Invisible Dark Photons in Higgs Decays via Gluon--Gluon Fusion at ATLAS Run 3
- Search for Higgs boson production in association with another Higgs or an exotic scalar boson in the bb̅W+W− single lepton final state at √s=13 TeV with the ATLAS experiment
BibTeX
@misc{gallen2026dark,
title = {{Dark photons in exotic Higgs boson decays at FCC-ee}},
author = {Axel Gallén and Sarah Ben Abdesselem and Giulia Ripellino and Rebeca Gonzalez Suarez},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.21648},
eprint = {2609.21648},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.21648},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Dark photons in exotic Higgs boson decays at FCC-ee
AU - Axel Gallén
AU - Sarah Ben Abdesselem
AU - Giulia Ripellino
AU - Rebeca Gonzalez Suarez
PY - 2026
DA - 2026/09/18
PB - arXiv
DO - 10.48550/arxiv.2609.21648
UR - https://arxiv.org/abs/2609.21648
AB - A prospective search for dark photons decaying into collimated, displaced muon pairs is presented for the electron-positron stage of the Future Circular Collider, FCC-ee. Assuming the full luminosity of the Higgs run at 240 GeV, the study probes a broad range of dark photon masses and couplings. The signature comprises two jets from a Z boson decay and two muon pairs from dark photons produced in Higgs decays. A kinematics-based selection achieves zero background while retaining high signal efficiency. Expected limits are set on the Higgs boson branching ratio to dark photons as a function of the dark photon mass and coupling.
ER -