Direct detection and solar capture of dark matter with momentum and velocity dependent elastic scattering

Abstract

We explore the momentum and velocity dependent elastic scattering between the dark matter (DM) particles and the nuclei in detectors and the Sun. In terms of the non-relativistic effective theory, we phenomenologically discuss ten kinds of momentum and velocity dependent DM-nucleus interactions and recalculate the corresponding upper limits on the spin-independent DM-nucleon scattering cross section from the current direct detection experiments. The DM solar capture rate is calculated for each interaction. Our numerical results show that the momentum and velocity dependent cases can give larger solar capture rate than the usual contact interaction case for almost the whole parameter space. On the other hand, we deduce the Super-Kamiokande's constraints on the solar capture rate for eight typical DM annihilation channels. In contrast to the usual contact interaction, the Super-Kamiokande and IceCube experiments can give more stringent limits on the DM-nucleon elastic scattering cross section than the current direct detection experiments for several momentum and velocity dependent DM-nucleus interactions. In addition, we investigate the mediator mass's effect on the DM elastic scattering cross section and solar capture rate.

18 pages, 4 figures, 2 tables. minor changes and a reference added, published in Nuclear Physics B

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• A complete Lorentz-to-Galileo dictionary for direct Dark Matter detection
• Generalised form factor dark matter in the Sun
• Global limits and interference patterns in dark matter direct detection
• Direct detection and solar capture of spin-dependent dark matter
• Dark matter signals at neutrino telescopes in effective theories
• $\chi$aro$\nu$: a tool for neutrino flux generation from WIMPs
• Pinning down inelastic dark matter in the Sun and in direct detection
• Updated constraints on velocity and momentum-dependent asymmetric dark matter
• Thermalization time scales for WIMP capture by the Sun in effective theories
• WIMP capture and annihilation in the Earth in effective theories
• WIMP capture by the Sun in the effective theory of dark matter self-interactions
• A halo-independent lower bound on the dark matter capture rate in the Sun from a direct detection signal
• Exploring detection of nuclearites in a large liquid scintillator neutrino detector
• Sensitivity of WIMP bounds on the velocity distribution in the limit of a massless mediator