Work

Explaining the LZ High-Energy Recoil Event with Inelastic Sneutrino Dark Matter in Supersymmetry

Year: 2026

Type: preprint

Abstract: We study an inelastic sneutrino dark matter origin of the LZ high-energy event in the inverse-seesaw next-to-minimal supersymmetric standard model. Approximate lepton-number conservation protects the small mass splitting, while singlet interactions separate freeze-out from solar-neutrino production. The LZ recoil and solar constraints overlap even for a fully cooled population in equilibrium. Three thermal mechanisms reproduce the relic abundance and satisfy all relevant constraints. Photon-dominated annihilation produces gamma-ray boxes, offering a complementary test of this interpretation.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.15742

Authors: Lian, Jingwei, Yang, Jin Min

Institutions: Henan Institute of Science and Technology, Henan Normal University, Chinese Academy of Sciences, Institute of Theoretical Physics

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Henan Normal University, National Natural Science Foundation of China, Natural Science Foundation of Henan Province

Awards: G5521981088, G6463068186, G6926337879

OpenAlex ID: W7213231841

Cites: 10

Cited by: 20

Related to: 10