Inelastic Signatures of Electroweak Dark Matter
hep-ph, astro-ph.CO, hep-ex
Submitted: 2026-09-03
Updated: 2026-09-08
Comments: 7 pages, 3 figures. Substantially improved version with expanded discussion, updated phenomenology, and additional consistency checks
License: http://creativecommons.org/licenses/by/4.0/
The gist: Minimal dark matter extended to include a Majorana and a Dirac multiplet coupled through the Higgs --- the HC-MDM model --- provides a compelling and predictive framework.
Terminology
Abstract
Minimal dark matter extended to include a Majorana and a Dirac multiplet coupled through the Higgs --- the HC-MDM model --- provides a compelling and predictive framework. We show that in certain limits of this model, the mass splitting and the inelastic interaction are representation-independent, while the thermal-relic masses are representation-dependent. We then show that this model can account for the high-energy recoil event recently reported by LUX-ZEPLIN (LZ) while also respecting thermal-relic, elastic-scattering, and solar-capture constraints. Generic inelastic DM models do not connect all these tests and generic Higgsino models do not survive them.
Sources
- Particle Dark Matter: Evidence, Candidates and Constraints
- Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
- The Waning of the WIMP? A Review of Models, Searches, and Constraints
- WIMP dark matter candidates and searches - current status and future prospects
- Dark Matter
- Explosive Dark Matter Annihilation
- Non-Perturbative Effect on Dark Matter Annihilation and Gamma Ray Signature from Galactic Center
- Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
- A Theory of Dark Matter
- Sommerfeld factor for arbitrary partial wave processes
- WIMPonium and Boost Factors for Indirect Dark Matter Detection
- Bound-state formation for thermal relic dark matter and unitarity
- Effects of Bound States on Dark Matter Annihilation
- Cosmological Implications of Dark Matter Bound States
- Minimal Dark Matter
- Cosmology and Astrophysics of Minimal Dark Matter
- Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
- Limits on spin-independent WIMP-nucleon interactions from the two-tower run of the Cryogenic Dark Matter Search
- Closing the window on WIMP Dark Matter
- Looking for WIMPs through the neutrino fogs
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