The Dark Sequential Z' Portal: Collider and Direct Detection Experiments

TL;DR

This paper analyzes a Majorana fermion dark matter model with a sequential Z' gauge boson, combining collider, direct detection, and neutrino flux data to identify viable parameter space consistent with current experiments.

Contribution

It provides a comprehensive study of Majorana dark matter with a Z' portal, integrating collider, direct detection, and neutrino observations to constrain the model.

Findings

Identifies parameter regions compatible with current experimental limits.

Highlights the complementarity of collider and direct detection searches.

Proposes future experimental sensitivities to probe the model further.

Abstract

We revisit the status of a Majorana fermion as a dark matter candidate when a sequential Z' gauge boson dictates the dark matter phenomenology. Direct dark matter detection signatures rise from dark matter-nucleus scatterings at bubble chamber and liquid xenon detectors, and from the flux of neutrinos from the Sun measured by the IceCube experiment, which is governed by the spin-dependent dark matter-nucleus scattering. On the collider side, LHC searches for dilepton and mono-jet + missing energy signals play an important role. The relic density and perturbativity requirements are also addressed. By exploiting the dark matter complementarity we outline the region of parameter space where one can successfully have a Majorana dark matter particle in light of current and planned experimental sensitivities.