Monochromatic neutrinos from dark matter through the Higgs portal De la Torre Domínguez, Pablo Gutiérrez González, Miguel Masip Mellado, Manuel Dark matter theory Dark matter experiments Neutrino astronomy We define a minimal model of dark matter with a fermion singlet χ coupled to the visible sector through the Higgs portal and with a heavy Dirac neutrino N that opens the annihilation channel χχ → Nν. The model provides the observed relic abundance consistently with bounds from direct searches and implies a monochromatic neutrino signal at 10 GeV– 1TeV in indirect searches. In particular, we obtain the capture rate of χ by the Sun and show that the signal could be above the neutrino floor produced by cosmic rays showering in the solar surface. In most benchmark models this solar astrophysical background is above the expected dark matter signal, so the model that we propose is a canonical example of WIMP not excluded by direct searches that could be studied at neutrino telescopes and also at colliders. 2024-04-03T11:01:02Z 2024-04-03T11:01:02Z 2023-11-14 info:eu-repo/semantics/article Pablo de la Torre et al JCAP11(2023)068 [10.1088/1475-7516/2023/11/068] https://hdl.handle.net/10481/90365 10.1088/1475-7516/2023/11/068 eng http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional Institute of Physics Publishing Ltd.