Neutrino Constraints on Inelastic Dark Matter after CDMS II

Abstract

We discuss the neutrino constraints from solar and terrestrial dark matter (DM) annihilations in the inelastic dark matter (iDM) scenario after the recent CDMS II results. To reconcile the DAMA/LIBRA data with constraints from all other direct experiments, the iDM needs to be light ($m_{\chi }<100$ GeV) and have a large DM-nucleon cross section (${\sigma }_n\sim$ 10${}^{-4}$ pb in the spin-independent (SI) scattering and ${\sigma }_n\sim$ 10 pb in the spin-dependent (SD) scattering). The dominant contribution to the iDM capture in the Sun is from scattering off Fe/Al in the SI/SD case. Current bounds from Super-Kamiokande exclude the hard DM annihilation channels, such as $W^{+}{W}^{-}$, $ZZ$, $t\bar{t}$ and ${\tau }^{+}{\tau }^{-}$. For soft channels such as $b\bar{b}$ and $c\bar{c}$, the limits are loose, but could be tested or further constrained by future IceCube plus DeepCore. For neutrino constraints from the DM annihilation in the Earth, due to the weaker gravitational effect of the Earth and inelastic capture condition, the constraint exists only for small mass splitting $\delta <$ 40 keV and $m_{\chi }\sim (10,50)$ GeV even in the ${\tau }^{+}{\tau }^{-}$ channel.

11 pages, 8 figures

References in corpus (11)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Inelastic Dark Matter in Light of DAMA/LIBRA
• Global interpretation of direct Dark Matter searches after CDMS-II results
• Nuclear spin structure in dark matter search: The finite momentum transfer limit
• High energy neutrinos from neutralino annihilations in the Sun
• The New DAMA Dark-Matter Window and Energetic-Neutrino Searches
• Capture of Inelastic Dark Matter in the Sun
• Muon Fluxes From Dark Matter Annihilation
• Probing Dark Matter Dynamics via Earthborn Neutrinos at IceCube
• Galactic Substructure and Energetic Neutrinos from the Sun and the Earth

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• Isospin-Violating Dark Matter and Neutrinos From the Sun
• Dipole-interacting Fermionic Dark Matter in positron, antiproton, and gamma-ray channels
• Peaked Signals from Dark Matter Velocity Structures in Direct Detection Experiments
• Pinning down inelastic dark matter in the Sun and in direct detection
• Dark matter and Higgs phenomenology predicted by left-right twin Higgs model in light of CDMS II results
• TeV Scale Neutrino Mass Generation, Minimal Inelastic Dark Matter, and High Scale Leptogenesis
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• A halo-independent lower bound on the dark matter capture rate in the Sun from a direct detection signal
• Direct detection data and possible hints for low-mass WIMPs
• Exploring the singlet scalar dark matter from direct detections and neutrino signals via its annihilation in the Sun
• Halo-independent bounds on Inelastic Dark Matter
• Indirect detection constraints on the scotogenic dark matter model
• Vector-like Sneutrino Dark Matter