From LUX-ZEPLIN to Colliders: Probing Higgsino Dark Matter
- 1Center for Theory and Computation , National Tsing Hua University , Hsinchu 30013 , Taiwan
- 2Department of Physics , National Tsing Hua University , Hsinchu 30013 , Taiwan
- 3Institute for Convergence of Basic Studies , Seoul National University of Science and Technology , Seoul 01811 , Republic of Korea
Abstract
The high-energy nuclear recoil event with recoil energy ER ≈ 248 keV observed by the LZ collaboration provides an exciting hint toward a model with a 1.1 TeV Higgsino inelastic dark matter. Such a recoil energy requires a mass splitting of order (δ≈ 350 keV) between the two nearly-degenerate neutral states. We show that within the framework of the MSSM, the model predicts a nearly-degenerate charged Higgsino state, chargino, whose mass splitting from the neutral states is of order 𝒪(350)~MeV. The subsequent decays of such charginos once produced at colliders would lead to a sub-centimeter charged track or tracklet (with lifetime τ≈ 0.025 ns) at the detector. We show that such a scenario is not constrained by the current LHC bounds, and could be tested at future high-energy colliders, including HL-LHC, 100 TeV pp colliders, and muon colliders. The most critical requirement is how short a track or tracklet can be reconstructed.
Related
- Higgsino dark matter in the Starobinsky supergravity with the MSSM in light of the LUX-ZEPLIN event
- Higgsino Dark Matter Interpretation of the LUX-ZEPLIN 248 keV Nuclear-Recoil Event
- Interpreting the High-Recoil LUX-ZEPLIN Event with Bino-/Singlino-like and Higgsino Dark Matter
- Higgsino dark matter compatible with the LUX-ZEPLIN high-energy nuclear-recoil event and IceCube constraints
- Probing LZ-Motivated TeV Higgsino Dark Matter through Heavier Sparticles at LHC
BibTeX
@misc{cheung2026from,
title = {{From LUX-ZEPLIN to Colliders: Probing Higgsino Dark Matter}},
author = {Kingman Cheung and Sin Kyu Kang and Ranjeet Kumar},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.08712},
eprint = {2609.08712},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.08712},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - From LUX-ZEPLIN to Colliders: Probing Higgsino Dark Matter
AU - Kingman Cheung
AU - Sin Kyu Kang
AU - Ranjeet Kumar
PY - 2026
DA - 2026/09/08
PB - arXiv
DO - 10.48550/arxiv.2609.08712
UR - https://arxiv.org/abs/2609.08712
AB - The high-energy nuclear recoil event with recoil energy E_R ≈ 248 keV observed by the LZ collaboration provides an exciting hint toward a model with a 1.1 TeV Higgsino inelastic dark matter. Such a recoil energy requires a mass splitting of order (δ≈ 350 keV) between the two nearly-degenerate neutral states. We show that within the framework of the MSSM, the model predicts a nearly-degenerate charged Higgsino state, chargino, whose mass splitting from the neutral states is of order 𝒪(350)~MeV. The subsequent decays of such charginos once produced at colliders would lead to a sub-centimeter charged track or tracklet (with lifetime τ≈ 0.025 ns) at the detector. We show that such a scenario is not constrained by the current LHC bounds, and could be tested at future high-energy colliders, including HL-LHC, 100 TeV pp colliders, and muon colliders. The most critical requirement is how short a track or tracklet can be reconstructed.
SN - 2331-8422
ER -