Thermal Dark Matter from Freeze-Out of Inverse Decays

Ronny Frumkin, Yonit Hochberg, Eric Kuflik, Hitoshi Murayama

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We propose a new thermal dark matter candidate whose abundance is determined by the freeze-out of inverse decays. The relic abundance depends parametrically only on a decay width, while matching the observed value requires that the coupling determining the width - and the width itself - should be exponentially small. The dark matter is therefore very weakly coupled to the standard model, evading conventional searches. This inverse decay dark matter can be discovered by searching for the long-lived particle that decays into the dark matter at future planned experiments.

Original languageAmerican English
Article number121001
JournalPhysical Review Letters
Issue number12
StatePublished - 24 Mar 2023

Bibliographical note

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the ""Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.


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