Search for dark matter annihilation in the center of the Earth with 8 years of IceCube data

TL;DR

This paper reports on an 8-year search for neutrinos from dark matter annihilation in Earth's core using IceCube data, showing improved sensitivity over previous studies.

Contribution

It presents a new analysis with enhanced sensitivity for detecting neutrinos from dark matter annihilation in Earth's center, using extensive IceCube data.

Findings

Significant sensitivity improvements over previous analyses.

No detection of dark matter annihilation signals.

Constraints placed on dark matter properties.

Abstract

Dark matter particles in the galactic halo can scatter off particles in celestial bodies such as stars or planets, lose energy and become gravitationally trapped. In this process, an accumulation of dark matter in the center of celestial bodies is expected, for example, at the center of the Earth. If dark matter self-annihilates into Standard Model particles, the end products of these annihilations include neutrinos. The IceCube Neutrino Observatory at the geographic South Pole can detect the resulting flux of neutrinos originating from dark matter annihilation in the center of the Earth. A search for this signal is on-going using 8 years of IceCube data and probing different annihilation channels. Here the sensitivities are presented for this new analysis, showing significant improvements with respect to the previous analyses from IceCube and other experiments.