Our Dark Matter Stopping in the Earth

TL;DR

This paper proposes a model where dark matter consists of vacuum bubbles that interact with Earth and atmosphere, emitting specific radiation, potentially explaining why only DAMA-LIBRA detects dark matter signals underground.

Contribution

It introduces a novel dark matter model involving vacuum bubbles and analyzes their stopping behavior and radiation emission within Earth, explaining experimental detection discrepancies.

Findings

Dark matter pearls emit 3.5 keV radiation during Earth passage

They can reach deep underground detectors like DAMA-LIBRA

The model explains why only DAMA-LIBRA observes dark matter signals

Abstract

We have worked for some time on a model for dark matter, in which dark matter consists of small bubbles of a new speculated type of vacuum, which are pumped up by some ordinary matter such as diamond, so as to resist the pressure of the domain wall separating the two vacua. Here we put forward thoughts on, how such macroscopic pearls would have their surrounding dust cleaned off passing through the atmosphere and the Earth, and what their distribution would be as a function of the depth of their stopping point and the distribution of the radiation emitted from them. In our model we assume that they radiate 3.5 keV electrons and photons, after having been excited during their passage into the Earth. The purpose of such an estimation of the radiation distribution is to explain the truly mysterious fact that, among all the underground experiments seeking dark matter colliding with the Earth material, only the DAMA-LIBRA experiment has seen any evidence of dark matter. This is an experiment based on solid NaI scintillators and is rather deep at 1400 m. It is our point that we can arrange the main radiation to appear in the relatively deep DAMA- LIBRA site, and explain that the dark matter pearls cannot stop in a fluid, such as xenon in the xenon based experiments.