Upgoing ANITA events as evidence of the CPT symmetric universe

TL;DR

This paper proposes that two upgoing ultra-high energy events observed by ANITA can be explained by decay of a CPT-symmetric dark matter particle within Earth, indicating a unique dark matter distribution.

Contribution

It introduces a novel explanation linking CPT-symmetric dark matter decay to observed ANITA events, connecting particle physics with astrophysical phenomena.

Findings

Decay of 480 PeV right-handed neutrino explains upgoing events.

Suggests an unusual dark matter density distribution in Earth.

Supports CPT symmetry in the context of dark matter.

Abstract

We explain the two upgoing ultra-high energy shower events observed by ANITA as arising from the decay in the Earth's interior of the quasi-stable dark matter candidate in the CPT symmetric universe. The dark matter particle is a 480 PeV right-handed neutrino that decays into a Higgs boson and a light Majorana neutrino. The latter interacts in the Earth's crust to produce a tau lepton that in turn initiates an atmospheric upgoing shower. The fact that both events emerge at the same angle from the Antarctic ice-cap suggests an atypical dark matter density distribution in the Earth.