Abstract
Abstract
Dark matter direct detection experiments impose the strong bounds on thermal dark matter
scenarios. The bound can naturally be evaded if the cross section is momentum transfer or
velocity dependent. One can test such thermal dark matter scenarios if dark matter particles are
boosted by some mechanism. In this work, we consider a specific semi-annihilation χχ̅→νχ where χ(χ̅) is dark matter (anti-dark matter), and search
for simultaneous detection of the neutrino and the boosted dark matter in the final state at DUNE.
We find that the energies of the neutrino and boosted dark matter are reconstructed by kinematics.
In addition, we find that both signals can be testable at DUNE if the dark matter mass is below
8 GeV, and the scattering cross section is momentum transfer dependent. Even for
larger dark matter masses, the two signals can be tested by combination of DUNE and the other
experiments such as IceCube/DeepCore and Hyper-Kamiokande.