Electroweak Axion Portal to Dark Matter

TL;DR

This paper investigates axion-like particles as mediators between dark matter and electroweak bosons, highlighting their potential for detection through astrophysical, cosmological, and laboratory experiments, and establishing benchmarks for future testing.

Contribution

It introduces specific models of electroweak ALP mediators, providing concrete benchmarks and analyzing their testability across various experimental platforms.

Findings

Current experiments already constrain parts of the parameter space.

Electroweak ALPs can produce detectable signals in astrophysical observations.

Future experiments have promising prospects for discovering these mediators.

Abstract

Axion-like particles (ALPs) are good candidates for mediators to the dark sector. We explore scenarios in which an ALP mediates interactions between dark matter and electroweak gauge bosons. These models yield testable electromagnetic signals in astrophysical, cosmological, and terrestrial probes. We find promising prospects for both indirect detection and accelerator tests, with interesting parameter space already constrained by current experiments. Our work provides concrete benchmarks for future tests of the electroweak ALP portal.