Multi-State Dark Matter from Spherical Extra Dimensions

TL;DR

This paper introduces a multi-state dark matter model derived from a spherical extra-dimensional setup, where Kaluza-Klein modes form stable dark matter candidates protected by symmetries, with implications for relic abundance and detection.

Contribution

It presents a novel multi-state dark matter framework from spherical extra dimensions with natural stability mechanisms and detailed phenomenological analysis.

Findings

Dark matter states are stable due to symmetries.

Relic abundance calculations are performed.

Elastic scattering cross sections are analyzed.

Abstract

We demonstrate a new model which uses an ADD type braneworld scenario to produce a multi-state theory of dark matter. Compactification of the extra dimensions onto a sphere leads to the association of a single complex scalar in the bulk with multiple Kaluza-Klein towers in an effective four-dimensional theory. A mutually interacting multi-state theory of dark matter arises naturally within which the dark matter states are identified with the lightest Kaluza-Klein particles of fixed magnetic quantum number. These states are protected from decay by a combination of a global U(1) symmetry and the continuous rotational symmetry about the polar axis of the spherical geometry. We briefly discuss the relic abundance calculation and investigate the spin-independent elastic scattering off nucleons of the lightest and next-to-lightest dark matter states.