Long-range self-interacting dark matter in the Sun

Abstract

We investigate the implications of the long-rang self-interaction on both the self-capture and the annihilation of the self-interacting dark matter (SIDM) trapped in the Sun. Our discussion is based on a specific SIDM model in which DM particles self-interact via a light scalar mediator, or Yukawa potential, in the context of quantum mechanics. Within this framework, we calculate the self-capture rate across a broad region of parameter space. While the self-capture rate can be obtained separately in the Born regime with perturbative method, and the classical limits with the Rutherford formula, our calculation covers the gap between in a non-perturbative fashion. Besides, the phenomelogy of both the Sommerfeld-enhanced s- and p-wave annihilation of the solar SIDM is also involved in our discussion. Moreover, by combining the analysis of the Super-Kamiokande (SK) data and the observed DM relic density, we constrain the nuclear capture rate of the DM particles in the presence of the dark Yukawa potential. The consequence of the long-range dark force on probing the solar SIDM turns out to be significant if the force-carrier is much lighter than the DM particle, and a quantitative analysis is provided.

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• Dark Photons from the Center of the Earth: Smoking-Gun Signals of Dark Matter
• Antiprotons from dark matter annihilation through light mediators and a possible excess in AMS-02 $\bar{p}/p$ data
• A tale of dark matter capture, sub-dominant WIMPs, and neutrino observatories
• Evaporation Barrier for Dark Matter in Celestial Bodies
• Higgs-portal Scalar Dark Matter: Scattering Cross Section and Observable Limits
• Cosmic ray $e^{+}{e}^{-}$ spectrum excess and peak feature observed by the DAMPE experiment from dark matter
• Anisotropic non-Gaussianity from Rotational Symmetry Breaking Excited Initial States
• Analysis on the black hole formations inside old neutron stars by isospin-violating dark matter with self-interaction
• Effective field theory of statistical anisotropies for primordial bispectrum and gravitational waves
• Singularities in the Gravitational Capture of Dark Matter through Long-Range Interactions
• Probing Superheavy Dark Matter with Exoplanets
• Sensitivity of WIMP bounds on the velocity distribution in the limit of a massless mediator