Work

Search for light dark matter in rare meson decays

Year: 2026

Type: article

Abstract: Current dark matter direct detection experiments have low sensitivity to sub-GeV dark matter. In this work, we demonstrate that rare B and K meson decays with missing energy in the final state can serve as efficient probes in this mass range. We analyze a generic Z ′ portal dark matter model and derive upper limits on its parameters from experimental bounds on the rare B and K meson decays. Our results show that such meson decay processes provide complementary constraints to current direct detection experiments for sub-GeV dark matter, particularly for interaction forms mediated by dark matter momentum-dependent operators.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/jk9r-xvph

Authors: Ze-Kun Liu, Ying Li, Biao-Feng Hou, Qin Chang

Institution: Henan Normal University

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Natural Science Foundation of China, Natural Science Foundation of Henan Province, National Key Research and Development Program of China, Henan Provincial Science and Technology Research Project

Awards: G1580621639, G1799021458, G2353232773, G3223428189, G3541985086