Earth-scale searches for displaced vertices: KM3NeT meets the LHC
Abstract
At high-energy colliders, enormous numbers of feebly interacting particles beyond the Standard Model can be produced with negligible missing-energy signatures in the main detectors. These particles can travel macroscopic distances and decay inside a distant large-volume detector, leaving visible signals. In this sense, we may not need new detectors to search for very long-lived particles. In this paper, we show that long-lived dark particles produced in rare meson decays in proton-proton collisions during LHC Run 3 and at the HL-LHC can leave observable imprints in KM3NeT detectors such as ORCA. If no anomalous signal has been observed in ORCA to date, our projected sensitivity for LHC Run 3 will correspond to one of the strongest limits on kaon decays into light long-lived particles.
Related
- Hidden Neutrino Active Galaxy Candidates: Prospects for Catalog and Stacking Searches with IceCube, IceCube-Gen2, and KM3NeT
- Probing νSMEFT at Belle II with displaced dilepton vertices
- Forward decay chain reconstruction with displaced vertices in intense magnetic fields
- Searches for coincident Gravitational Waves and High-Energy Neutrinos from the KM3NeT and ANTARES telescopes during O3
- Vector-boson-fusion timing references for four-dimensional displaced-vertex searches
BibTeX
@misc{min2026earthscale,
title = {{Earth-scale searches for displaced vertices: KM3NeT meets the LHC}},
author = {Ui Min and Wen Yin},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.04386},
eprint = {2609.04386},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.04386},
note = {CC0},
}
RIS
TY - UNPB
TI - Earth-scale searches for displaced vertices: KM3NeT meets the LHC
AU - Ui Min
AU - Wen Yin
PY - 2026
DA - 2026/09/03
PB - arXiv
DO - 10.48550/arxiv.2609.04386
UR - https://arxiv.org/abs/2609.04386
AB - At high-energy colliders, enormous numbers of feebly interacting particles beyond the Standard Model can be produced with negligible missing-energy signatures in the main detectors. These particles can travel macroscopic distances and decay inside a distant large-volume detector, leaving visible signals. In this sense, we may not need new detectors to search for very long-lived particles. In this paper, we show that long-lived dark particles produced in rare meson decays in proton-proton collisions during LHC Run 3 and at the HL-LHC can leave observable imprints in KM3NeT detectors such as ORCA. If no anomalous signal has been observed in ORCA to date, our projected sensitivity for LHC Run 3 will correspond to one of the strongest limits on kaon decays into light long-lived particles.
ER -