Probing multicomponent FIMP scenarios with gamma-ray telescopes
| Autor: | Alejandro Ibarra, Johannes Herms |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Particle physics 010308 nuclear & particles physics media_common.quotation_subject Dark matter Scalar (mathematics) Gamma ray FOS: Physical sciences Astronomy and Astrophysics Observable Model parameters 01 natural sciences Universe Standard Model High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences Thermal media_common |
| DOI: | 10.48550/arxiv.1912.09458 |
| Popis: | We consider a scenario where the dark sector includes two Feebly Interacting Massive Particles (FIMPs), with couplings to the Standard Model particles that allow their production in the Early Universe via thermal freeze-in. These couplings generically lead to the decay of the heavier dark matter component into the lighter, possibly leading to observable signals of the otherwise elusive FIMPs. Concretely, we argue that the loop induced decay $\psi_2\rightarrow\psi_1\gamma$ for fermionic FIMPs, or $\phi_2\rightarrow\phi_1\gamma\gamma$ for scalar FIMPs, could have detectable rates for model parameters compatible with the observed dark matter abundance. Comment: 14 pages, 3 figures |
| Databáze: | OpenAIRE |
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