%0 Journal Article
%T Light cold dark matter from non-thermal decay
%A Choi, K. Y.
%A Gong, J. O.
%A Joh, J.
%A Park, W. I.
%A Seto, O.
%J Physics Letters B
%D 2023
%V 845
%I Elsevier
%@ 0370-2693
%G English
%F Choi_etal2023
%O WOS:001155183100001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5942), last updated on Mon, 19 Feb 2024 19:48:46 +0000
%X We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-alpha constraints. We demonstrate two explicit examples for such light cold dark matter.
%K Dark matter
%K Non-thermal production
%K Axion
%K Q-ball
%R 10.1016/j.physletb.2023.138126
%U https://arxiv.org/abs/2304.07462
%U https://doi.org/10.1016/j.physletb.2023.138126
%P 138126-8pp