The Dark Side of Strongly Coupled Theories

TL;DR

This paper explores constraints on dark matter candidates from a strong coupling theory, analyzing experimental limits and proposing conditions under which certain candidates could explain experimental discrepancies.

Contribution

It provides new insights into dark matter candidates from a minimal quasi-conformal strong coupling theory and examines their compatibility with experimental results.

Findings

CDMS excludes a narrow mass window around 120 GeV for one candidate.

A -2 charged particle with helium-4 can explain DAMA results under specific conditions.

Certain dark matter candidates remain viable within experimental constraints.

Abstract

We investigate the constraints of dark matter search experiments on the different candidates emerging from the minimal quasi-conformal strong coupling theory with fermions in the adjoint representation. For one candidate, the current limits of CDMS exclude a tiny window of masses around 120 GeV. We also investigate under what circumstances the newly proposed candidate composed of a -2 negatively charged particle and a $^4He^{+2}$ can explain the discrepancy between the results of the CDMS and DAMA experiments. We found that this type of dark matter should give negative results in CDMS, while it can trigger the detectors of DAMA, if a condition between the mass and the binding energy of the -2 particle with the nucleus of the detector is satisfied.