Electroweak Axion Portal to Dark Matter

Stephanie Allen, Albany Blackburn, Oswaldo Cardenas, Zoe Messenger, Ngan Nguyen, and Brian Shuve*

Electroweak Axion Portal to Dark Matter

Physical Review D 110, 095010 (2024).

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.

* denotes faculty author.

† denotes student author.