Indirect detection constraints on the scotogenic dark matter model
arXiv:2105.04899
Abstract
Radiative seesaw models have the attractive property of providing dark matter candidates in addition to the generation of neutrino masses. Here we present a study of neutrino signals from the annihilation of dark matter particles that have been gravitationally captured in the Sun in the framework of the scotogenic model. We compute expected event rates in the IceCube detector in its 86-string configuration. As fermionic dark matter does not scatter off nucleons due to its singlet nature and therefore does not accumulate in the Sun, we study the case of scalar dark matter with a scan over the parameter space. Due to a naturally small mass splitting between the two neutral scalar components, inelastic scattering processes with nucleons can occur. We find that for most of the parameter space, i.e. for mass splittings below 500 keV, inelastic scattering in the Sun yields IceCube event rates above 10 events per year, whereas direct detection on Earth is sensitive only to 250 keV. Consequently, a detailed analysis with IceCube could lead to a lower limit on the scalar coupling /TeV. For larger mass splittings, only elastic scattering occurs in the Sun. In this case, XENON1T limits only allow for models with expected event rates of up to O(0.1) per year. Some of these models, in particular those with large DM mass and fermion coannihilation, could also be tested with a dedicated IceCube analysis of DM annihilation in the Galactic Center.
arXiv comment24 pages, 9 figures, 2 tables
References in corpus (21)
- Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
- Oscillating neutrinos and mu --> e, gamma
- CalcHEP 3.4 for collider physics within and beyond the Standard Model
- SARAH 4: A tool for (not only SUSY) model builders
- SPheno 3.1: extensions including flavour, CP-phases and models beyond the MSSM
- Inelastic Dark Matter
- Observing the Dark Scalar Doublet and its Impact on the Standard-Model Higgs Boson at Colliders
- On dark matter models with uniquely spin-dependent detection possibilities
- Spectra of neutrinos from dark matter annihilations
- Propagation of tau neutrinos and tau leptons through the Earth and their detection in underwater/ice neutrino telescopes
- Results from the search for dark matter in the Milky Way with 9 years of data of the ANTARES neutrino telescope
- The Inelastic Frontier: Discovering Dark Matter at High Recoil Energy
- A Classification of Dark Matter Candidates with Primarily Spin-Dependent Interactions with Matter
- Enhancing Dark Matter Annihilation into Neutrinos
- AMEND: A Model Explaining Neutrino masses and Dark matter testable at the LHC and MEG
- Characterization of SABRE crystal NaI-33 with direct underground counting
- Probing DAMA/LIBRA in the full parameter space of WIMP effective models of inelastic scattering
- Isospin-violating dark matter in the light of recent data
- Neutrino Constraints on Inelastic Dark Matter after CDMS II
- Monochromatic neutrino lines from sneutrino dark matter
- Inflation and DM phenomenology in a scotogenic model extended with a real singlet scalar