Towards Cogenesis via Asymmetric Freeze-in: The $\chi$ Who Came-in from the Cold

Abstract

In models of freeze-in the dark matter (DM) is decoupled from the visible sector and initially has a depleted number density. The hidden and visible sectors are connected only via a feeble portal interaction by which DM can be produced. Asymmetric freeze-in (AFI) combines this scenario with ideas from asymmetric DM and provides a potential cogenesis mechanism. However, it has been argued that existing AFI models do not produce suitably large particle asymmetries due to cancellations which arises because the mediator state remains in thermal equilibrium. We examine AFI via an out-of-equilibrium mediator and using a simple scalar model show that in this case sizeable asymmetries may be generated.

arXiv comment18 pages

References in corpus (29)

• Freeze-In Production of FIMP Dark Matter
• Asymmetric Dark Matter: Theories, Signatures, and Constraints
• Review of asymmetric dark matter
• The Four Basic Ways of Creating Dark Matter Through a Portal
• Atomic Dark Matter
• Asymmetric Dark Matter from Leptogenesis
• Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
• Asymmetric Sneutrino Dark Matter and the Omega(b)/Omega(DM) Puzzle
• Leptogenesis as a Common Origin for Matter and Dark Matter
• On Relating the Genesis of Cosmic Baryons and Dark Matter
• Unified origin of baryons and dark matter
• Aidnogenesis via Leptogenesis and Dark Sphalerons
• Xogenesis
• A WIMPy Baryogenesis Miracle
• Origins of Hidden Sector Dark Matter I: Cosmology
• Self-interacting asymmetric dark matter coupled to a light massive dark photon
• Asymmetric Inelastic Inert Doublet Dark Matter from Triplet Scalar Leptogenesis
• Asymmetric Dark Matter from Hidden Sector Baryogenesis
• Baryogenesis from Dark Sector
• Closing in on Asymmetric Dark Matter I: Model independent limits for interactions with quarks
• Baryon and Dark Matter Genesis from Strongly Coupled Strings
• Co-genesis of Matter and Dark Matter with Vector-like Fourth Generation Leptons
• Asymmetric Dark Matter via Spontaneous Co-Genesis
• Origins of Hidden Sector Dark Matter II: Collider Physics
• Annihilation Signals from Asymmetric Dark Matter
• Baryon Asymmetry, Dark Matter and Local Baryon Number
• Cuts, Cancellations and the Closed Time Path: The Soft Leptogenesis Example
• Exodus: Hidden origin of dark matter and baryons
• Indirect Detection Signatures for the Origin of Asymmetric Dark Matter

Cited by in corpus (13)

• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• UltraViolet Freeze-in
• Big Bang Synthesis of Nuclear Dark Matter
• The role of CP violating scatterings in baryogenesis - case study of the neutron portal
• Freezing In, Heating Up, and Freezing Out: Predictive Nonthermal Dark Matter and Low-Mass Direct Detection
• Asymmetric Dark Matter and CP Violating Scatterings in a UV Complete Model
• Baryogenesis and Dark Matter from Freeze-In
• Mechanism for baryogenesis via feebly interacting massive particles
• Ultraviolet freeze-in baryogenesis
• Asymmetries in Extended Dark Sectors: A Cogenesis Scenario
• Genesis of baryon and dark matter asymmetries through ultraviolet scattering freeze-in
• Oscillation Baryogenesis via Ultraviolet Dark Matter Freeze-In
• Freeze-in Leptogenesis via Dark-Matter Oscillations