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- W4376311821 abstract "We propose that the dark matter of our universe could be sterile neutrinos which reside within the twin sector of a mirror twin Higgs model. In our scenario, these particles are produced through a version of the Dodelson-Widrow mechanism that takes place entirely within the twin sector, yielding a dark matter candidate that is consistent with X-ray and gamma-ray line constraints. Furthermore, this scenario can naturally avoid the cosmological problems that are typically encountered in mirror twin Higgs models. In particular, if the sterile neutrinos in the Standard Model sector decay out of equilibrium, they can heat the Standard Model bath and reduce the contributions of the twin particles to $N_mathrm{eff}$. Such decays also reduce the effective temperature of the dark matter, thereby relaxing constraints from large-scale structure. The sterile neutrinos included in this model are compatible with the seesaw mechanism for generating Standard Model neutrino masses." @default.
- W4376311821 created "2023-05-13" @default.
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- W4376311821 date "2023-05-10" @default.
- W4376311821 modified "2023-10-01" @default.
- W4376311821 title "Twin Sterile Neutrino Dark Matter" @default.
- W4376311821 doi "https://doi.org/10.48550/arxiv.2305.06364" @default.
- W4376311821 hasPublicationYear "2023" @default.
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