Limiting the Heavy-quark and Gluon-philic Real Dark Matter

TL;DR

This paper explores the viability of real spin-half, zero, and one dark matter particles interacting mainly with third-generation heavy quarks and gluons, constraining their properties using relic density, indirect detection, and direct detection data.

Contribution

It provides a comprehensive analysis of effective operators for heavy-quark and gluon-philic dark matter, constraining their Wilson coefficients with current experimental data.

Findings

Most dark matter candidates below 2 TeV are consistent with relic density constraints.

Gluon-philic and heavy-quark-philic interactions are constrained by XENON-1T limits.

Certain interaction operators remain viable within the experimental bounds.

Abstract

We investigate the phenomenological viability of real spin half, zero and one dark matter candidates, which interact predominantly with third generation heavy quarks and gluons via the twenty-eight gauge invariant higher dimensional effective operators. The corresponding Wilson coefficients are constrained one at a time from the relic density $\Omega^{\rm DM} h^2$ $\approx$ 0.1198. Their contributions to the thermal averaged annihilation cross-sections are shown to be consistent with the FermiLAT and H.E.S.S. experiments' projected upper bound on the annihilation cross-section in the $b\,\bar b$ mode. The tree-level gluon-philic and one-loop induced heavy-quark-philic DM-nucleon direct-detection cross-sections are analysed. The non-observation of any excess over expected background in the case of recoiled Xe-nucleus events for spin-independent DM-nucleus scattering in XENON-1T sets the upper limits on the eighteen Wilson coefficients. Our analysis validates the real DM candidates for the large range of accessible mass spectrum below 2 TeV for all but one interaction induced by the said operators.