Takashi Toma, "Simultaneous detection of boosted dark matter and neutrinos from the semi-annihilation at DUNE"

mardi 19 sept. 2023, 14:00 → 15:00 Europe/Paris

210/1-114 - Salle des Séminaires (IJCLab)

Dark matter direct detection experiments are imposing the strong bound on thermal dark matter scenarios. The bound can naturally be evaded if the cross section is momentum transfer dependent 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 $\chi \chi \to \nu \bar{\chi }$ where $\chi$ ($\bar{\chi }$) 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 well due to the precise angular resolution of the DUNE detector. In addition, we find that both signals can be testable at DUNE if the dark matter mass is below 30 GeV, and the cross section is momentum transfer dependent.

ijclab.pdf