Self-Destructing Dark Matter
We present Self-Destructing Dark Matter (SDDM), a new class of dark matter models which are detectable in large neutrino detectors. In this class of models, a component of dark matter can transition from a long-lived state to a short-lived one by scattering off of a nucleus or an electron in the Earth. The short-lived state then decays to Standard Model particles, generating a dark matter signal with a visible energy of order the dark matter mass rather than just its recoil. This leads to striking signals in large detectors with high energy thresholds. We present a few examples of models which exhibit self destruction, all inspired by bound state dynamics in the Standard Model. The models under consideration exhibit a rich phenomenology, possibly featuring events with one, two, or even three lepton pairs, each with a fixed invariant mass and a fixed energy, as well as non-trivial directional distributions. This motivates dedicated searches for dark matter in large underground detectors such as Super-K, Borexino, SNO+, and DUNE.
|Keywords||Dark matter, Neutrino Detectors and Telescopes (experiments)|
|Journal||The Journal of High Energy Physics|
Grossman, Y. (Yuval), Harnik, R. (Roni), Telem, O. (Ofri), & Zhang, Y. (2019). Self-Destructing Dark Matter. The Journal of High Energy Physics, 2019(7). doi:10.1007/JHEP07(2019)017