Matter asymmetry sourced dark matter

Alonso, Rodrigo; Scholtz, Jakub

Abstract

We investigate the possibility that the dark matter abundance is sourced by the baryon/lepton asymmetry of the early Universe. It turns out that a Goldstone field of a global classically preserved symmetry in the Standard Model experiences a kick during a period of baryon/lepton number generation. This mechanism can be regarded as dynamical generation of initial conditions for misalignment yet the prediction for relic abundance presents an inverse dependence on the coupling in parallel with freeze-in vs freeze-out. We explore two realizations of this mechanism and show that in conjunction with leptogenesis, it is possible to identify a viable promising region of parameter space for dark matter production with mass 10 MeV–1 GeV and decay constant f in the range of 10 10 – 10 12     GeV

Citation

Alonso, R., & Scholtz, J. (2021). Matter asymmetry sourced dark matter. Physical Review D, 104(2), Article 023513. https://doi.org/10.1103/physrevd.104.023513

• Journal Article Type: Article
• Acceptance Date: Jun 12, 2021
• Online Publication Date: Jul 12, 2021
• Publication Date: Jul 15, 2021
• Deposit Date: Oct 25, 2021
• Publicly Available Date: Oct 26, 2021
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 104
• Issue: 2
• Article Number: 023513
• DOI: https://doi.org/10.1103/physrevd.104.023513
• Public URL: https://durham-repository.worktribe.com/output/1225615