Abstract
The dark axion portal is a recently introduced portal between the standard model and the dark sector. It connects both the dark photon and the axion (or axion-like particle) to the photon simultaneously through an anomaly triangle. While the vector portal and the axion portal have been popular venues to search for the dark photon and axion, respectively, the new portal provides new detection channels if they coexist. The dark axion portal is not a result of the simple combination of the two portals, and its value is not determined by the other portal values; it should be tested independently. In this paper, we discuss implications of the new portal for the leptonic g-2, B-factories, fixed target neutrino experiments, and beam dumps. We provide the model-independent constraints on the axion-photon-dark photon coupling and discuss the sensitivities of the recently activated Belle-II experiment, which will play an important role in testing the new portal.
Highlights
Our Universe can be divided into two sectors: the visible and the dark
We study the implications of the dark axion portal for a roughly MeV–10 GeV scale dark photon, the mass range focused on by the typical intensity frontier new physics [5]
We studied implications of the dark axion portal for the lepton g − 2, B factories, fixed target neutrino experiments and the CHARM experiment in the ma ≪ mγ0 limit
Summary
Our Universe can be divided into two sectors: the visible and the dark. The visible sector of the Universe is comprised of the standard model (SM) particles, whose constituents were all identified with the last discovery of the Higgs boson in 2012 [1,2]. As a matter of fact, most of the studies of the portal focus on the rather light masses as we can see in the dark photon and axion (or axionlike particle) cases. We study the implications of the dark axion portal for a roughly MeV–10 GeV scale dark photon, the mass range focused on by the typical intensity frontier new physics [5]. We investigate possible signals of the new portal at the B factories and use the existing data from the BABAR experiment to constrain the axion-photon-dark photon coupling. VII, we provide a summary of our study and future directions
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
