Details

Autor(en) / Beteiligte

• Panci, Paolo
• Redigolo, Diego
• Schwetz, Thomas
• Ziegler, Robert

Titel

Axion dark matter from lepton flavor-violating decays

Ist Teil von

• Physics letters. B, 2023-06, Vol.841, p.137919, Article 137919

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2023

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We propose simple scenarios where lepton flavor-violating couplings generate the observed dark matter abundance through freeze-in of an axion-like particle with mass in the few keV range. Compared to flavor-diagonal freeze-in, this mechanism enhances dark matter stability, softens stellar cooling constraints and improves the experimental sensitivity of accelerator-based searches. These scenarios can be tested by future X-ray telescopes, and in some cases will be almost entirely probed by new searches for lepton flavor violation at high-intensity experiments such as Mu3e and MEG II.