Abstract
We present a model of vector dark matter that interacts through a low-mass vector mediator based on the Higgsing of an SU(2) dark sector. The dark matter is charged under a U(1) gauge symmetry. Even though this symmetry is broken, the residual global symmetries of the theory prevent dark matter decay. We present the behavior of the model subject to the assumption that the dark matter abundance is due to thermal freeze out, including self-interaction targets for small scale structure anomalies and the possibility of interacting with the Standard Model through the vector mediator.
Highlights
AND CONTEXTDespite strong evidence for the existence of dark matter [1,2], the lack of a definitive signal in recent experiments puts pressure on the well-studied weakly interacting massive particle (WIMP) paradigm [3,4,5,6,7,8,9,10]
This manuscript presents the first model of a stable, vector dark matter with a low-mass vector mediator
This model can be understood as the Higgsed phase of a Yang– Mills hidden sector, in contrast to the confined glueballdark matter phase explored in Refs. [28,29]
Summary
Despite strong evidence for the existence of dark matter [1,2], the lack of a definitive signal in recent experiments puts pressure on the well-studied weakly interacting massive particle (WIMP) paradigm [3,4,5,6,7,8,9,10]. The first proposal of spin-1 dark matter was the Kaluza–Klein photon in the universal extra dimension scenario This is a spin-1 analog to the supersymmetric neutralino: it is a weakly interacting massive particle whose existence is related to a symmetry solution of the Higgs hierarchy problem. An orthogonal direction in the study of non-Abelian dark sectors is the case where the gauge theory confines In this phase one has strongly interacting dark matter composed of glueball-like states [28,29]. Our model differs in that it is a simple gauge group with a different scalar content and standard dark sector annihilation modes
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