TL;DR
This paper explores a minimal dark QCD sector with a single dark quark flavor, predicting two dark matter candidates whose properties depend on few parameters, and analyzes their relic abundance and observational constraints.
Contribution
It introduces a large-$N$ dark QCD model with two DM candidates and studies their relic abundance, self-interactions, and cosmological constraints.
Findings
The heavy dark baryon can freeze-in independently of the confinement scale.
The light meson-like state can generate DM via cannibalization and freeze-out.
Parameter ranges are identified where the model is consistent with cosmological bounds.
Abstract
A dark QCD sector is a relatively minimal extension of the Standard Model (SM) that admits Dark Matter (DM) candidates but requires no portal to the visible sector beyond gravitational interactions: A "nightmare scenario" for DM detection. We consider a secluded dark sector containing a single flavor of light, vector-like dark quark gauged under . In the large- limit, this single-flavor theory becomes highly predictive, generating two DM candidates whose masses and dynamics are described by few parameters: A light quark-antiquark bound state, the dark analog of the meson, and a heavy bound state of quarks, the dark analog of the baryon. We show that the latter may freeze-in with an abundance independent of the confinement scale, forming DM-like relics for , while the former may generate DM via cannibalization and freeze-out. We study…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Code & Models
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
