Search for Ultra-High Energy WIMPs by detecting neutrino signatures from the earth core

TL;DR

This paper explores the potential to detect ultra-high energy WIMPs originating from superheavy dark matter decay by analyzing neutrino signatures from the earth's core, using JEM-EUSO and IceCube detectors.

Contribution

It introduces a method to probe ultra-high energy dark matter particles through neutrino detection, estimating event rates at various energies for the first time.

Findings

JEM-EUSO can detect WIMPs above 1 EeV.

IceCube can detect WIMPs above 1 ZeV.

Detection is feasible for WIMP masses between 10 GeV and 200 GeV.

Abstract

I study the possibility of probing Ultra-High Energy (UHE from now on) dark matter particles (>10$^8$ GeV) due to the decay of superheavy dark matter via detection of UHE neutrino signatures from the earth core. The UHE WIMP event rates are estimated at the energies of 100 PeV, and 1 EeV, 10 EeV, 100 EeV and 1 ZeV in JEM-EUSO and at the energy of 1 ZeV in IceCube, respectively. The diffuse neutrino contaminations are also roughly estimated in JEM-EUSO and IceCube. I found that the extreme energy WIMPs can be detected by JEM-EUSO above 1 EeV and by IceCube above 1 ZeV in the $\chi$ mass range of 10GeV-200GeV.