Stable Higgs Bosons as Cold Dark Matter

TL;DR

This paper proposes that stable Higgs bosons from gauge-Higgs unification models can serve as cold dark matter, matching observed relic abundance and being detectable in current experiments.

Contribution

It demonstrates that gauge-Higgs unification models naturally produce stable Higgs bosons as dark matter candidates with realistic relic abundance.

Findings

Relic abundance matches observations for Higgs mass around 70 GeV.

Higgs-nucleon cross section is near current experimental bounds.

Stable Higgs bosons are viable dark matter candidates in warped space models.

Abstract

In a class of the gauge-Higgs unification models the 4D neutral Higgs boson, which is a part of the extra-dimensional component of the gauge fields, becomes absolutely stable as a consequence of the gauge invariance and dynamically generated new parity, serving as a promising candidate for cold dark matter (CDM). We show that the observed relic abundance of cold dark matter is obtained in the SO(5) x U(1) model in the warped space with the Higgs mass around 70 GeV. The Higgs-nucleon scattering cross section is found to be close to the current CDMS II and XENON10 bounds in the direct detection of dark matter.