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Dynamics of the pseudo-FIMP in presence of a thermal Dark Matter

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arxiv 2212.07622 v3 pith:WDYCQNLG submitted 2022-12-15 hep-ph hep-th

classification hep-phhep-th
keywords havingthermaldarkinteractionmattermodelpfimppseudo-fimp
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abstract

We demonstrate that in a two component dark matter (DM) set up, when DM$_1$ is equilibrated with the thermal bath, the other DM$_2$, in spite of having feeble or negligible interaction with the SM particles, can be brought to equilibrium just by having sizeable interaction with DM$_1$. We propose that such DM candidates (DM$_2$) should be classified into a category called pseudo-FIMP (pFIMP) having unique freeze-out characteristics which depend on the thermal DM partner. The draft elaborates upon the pFIMP properties from a generic coupled Boltzmann Equations (cBEQ) in a model independent way, followed by a concrete model illustration.

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Cited by 1 Pith paper

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  1. Two-component Dark Matter and low scale Thermal Leptogenesis

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A two-component dark matter extension of the scotogenic model in which both dark matter particles participate in the CP violation that generates the observed baryon asymmetry at the TeV scale.

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