Speaker
Mr
Yen-Hsun Lin
(Institute of Physics, National Chiao Tung University, Taiwan)
Description
We argue that the detection of neutrino signature from the Earth core is an ideal approach for probing the coupling of heavy dark matter ($m_{\chi}>10^{5}$ GeV) to nucleons. We first note that direct searches are not effective for dark matter (DM) in such a mass range. Furthermore the energies of neutrinos arising from DM annihilations inside the Sun cannot exceed a few TeV at the Sun surface due to attenuation. Therefore the information about the DM mass is lost. Finally, the detection of neutrino signature from galactic halo can only probe DM annihilation cross sections. After presenting the rationale of our study, we discuss the event rates in IceCube and KM3NeT arising from the neutrino flux produced by annihilations of Earth-captured DM heavier than $10^{5}$ GeV. The IceCube and KM3NeT sensitivities to spin independent DM-proton scattering cross section $\sigma_{\chi p}$ in this mass range are presented. The implications of our results are discussed.
Authors
Prof.
Guey-Lin Lin
(Institute of Physics, National Chiao Tung University, Taiwan)
Mr
Yen-Hsun Lin
(Institute of Physics, National Chiao Tung University, Taiwan)