Goldstone Fermion Dark Matter

TL;DR

This paper introduces a Goldstone fermion as a natural WIMP dark matter candidate, which naturally achieves the correct relic abundance while evading current direct and indirect detection constraints, and predicts distinctive collider signatures.

Contribution

It proposes a new dark matter candidate, the Goldstone fermion, with unique annihilation properties and suppressed Standard Model interactions, leading to novel experimental signatures.

Findings

Goldstone fermion can account for dark matter relic abundance

Evades current direct detection bounds due to suppressed couplings

Predicts non-standard Higgs decays and collider phenomenology

Abstract

We propose that the fermionic superpartner of a weak-scale Goldstone boson can be a natural WIMP candidate. The p-wave annihilation of this `Goldstone fermion' into pairs of Goldstone bosons automatically generates the correct relic abundance, whereas the XENON100 direct detection bounds are evaded due to suppressed couplings to the Standard Model. Further, it is able to avoid indirect detection constraints because the relevant s-wave annihilations are small. The interactions of the Goldstone supermultiplet can induce non-standard Higgs decays and novel collider phenomenology.