Abstract
We analyze interactions between dark matter and standard model particles with spin one mediators in an effective field theory framework. In this paper, we are considering dark particles masses in the range from a few MeV to the mass of the Z boson. We use bounds from different experiments: Z invisible decay width, relic density, direct detection experiments, and indirect detection limits from the search of gamma-ray emissions and positron fluxes. We obtain solutions corresponding to operators with antisymmetric tensor mediators that fulfill all those requirements within our approach.
Highlights
Known SM symmetries and degrees of freedom, assuming that the typical energy of all relevant processes lies below the mediator mass
We will focus in this work in the low-energy region that is the one most restricted by observations, with DM masses under MZ
We used the results of indirect DM searches based on antimatter detection, the limits on the annihilation cross section derived in ref. [65] using the AMS-02 data on the positron flux [66]
Summary
A simple way to ensure the dark sector contains a stable particle that will play the role of DM is the following: we will assume [67, 68] that all dark fields transform non-trivially under a symmetry group GDM (whose nature we will not need to specify), while all SM particles are hypothesized to be GDM singlets. Effective field theory (EFT) formulations of dark matter interactions have proven to be a convenient and popular way to quantify many bounds on dark matter [34, 37, 69,70,71,72,73,74,75]. We will follow this approach, assuming that the SM-DM interactions are generated by the exchange of heavy mediators that we take to be singlets under GDM ×GSM.
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