PeV IceCube signals and $H_0$ tension in the framework of Non-Local Gravity

TL;DR

This paper explores how non-local gravity modifications could simultaneously explain high-energy PeV neutrino signals detected by IceCube, the abundance of dark matter, and potentially resolve the H_0 tension in cosmology.

Contribution

It introduces a framework where non-local gravity corrections account for IceCube neutrino flux, dark matter abundance, and the H_0 tension, linking particle physics and cosmology.

Findings

Non-local gravity can explain PeV neutrino flux.

The model accounts for dark matter abundance.

It offers a potential solution to the H_0 tension.

Abstract

We study possible effects of non-local gravity corrections on the recent discovery by the IceCube collaboration reporting high-energy neutrino flux detected at energies of order PeV. Considering the 4-dimensional operator $\sim y_{\alpha \chi}\bar{{L_{{\alpha}}}}\, H\, \chi$, it is possible to explain both the IceCube neutrino rate and the abundance of Dark Matter, provided that non-local corrections are present in the cosmological background. Furthermore, the mechanism could constitute a natural way to address the $H_0$ tension issue.