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Filtered Baryogenesis
High Energy Physics - Phenomenology · Submitted 16 Dec 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim For one of the portals, it is also possible to simultaneously explain the observed dark matter abundance, over many orders of magnitude in the dark matter mass.
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The abstract, sentence by sentence
We propose a new mechanism to simultaneously explain the observed dark matter abundance and the baryon asymmetry of the Universe. The mechanism is based on the Filtered Dark Matter scenario, where dark matter particles acquire a large mass during a first-order phase transition. This implies that only a small fraction of them are energetic enough to enter the advancing true vacuum bubbles and survive until today, while the rest are reflected and annihilate away quickly. We supplement this scenario with a CP-violating interaction, which creates a chiral asymmetry in the population of dark matter particles. In the false vacuum phase, a portal interaction quickly converts the dark sector chiral asymmetry into a Standard Model lepton asymmetry. The lepton asymmetry is then partially converted to a baryon asymmetry by standard electroweak sphaleron processes. We discuss the dependence of the generated asymmetry on the parameters of the model for two different portal interactions and demonstrate successful baryogenesis for both. For one of the portals, it is also possible to simultaneously explain the observed dark matter abundance, over many orders of magnitude in the dark matter mass.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We propose a new mechanism to simultaneously explain the observed dark matter abundance and the baryon asymmetry of the Universe. | contribution 1.00 | 0.86 | 0.51 | asserted 0.55 |
| s1 | The mechanism is based on the Filtered Dark Matter scenario, where dark matter particles acquire a large mass during a first-order phase transition. | method 0.71 | 0.21 | 0.06 | asserted 1.00 |
| s2 | This implies that only a small fraction of them are energetic enough to enter the advancing true vacuum bubbles and survive until today, while the rest are reflected and annihilate away quickly. | method 0.48 | 0.24 | 0.05 | asserted 0.97 |
| s3 | We supplement this scenario with a CP-violating interaction, which creates a chiral asymmetry in the population of dark matter particles. | method 0.65 | 0.76 | 0.06 | asserted 1.00 |
| s4 | In the false vacuum phase, a portal interaction quickly converts the dark sector chiral asymmetry into a Standard Model lepton asymmetry. | method 0.89 | 0.52 | 0.06 | asserted 1.00 |
| s5 | The lepton asymmetry is then partially converted to a baryon asymmetry by standard electroweak sphaleron processes. | method 0.81 | 0.22 | 0.08 | asserted 0.99 |
| s6 | We discuss the dependence of the generated asymmetry on the parameters of the model for two different portal interactions and demonstrate successful baryogenesis for both. | contribution 0.67 | 0.94 | 0.14 | asserted 1.00 |
| s7 | For one of the portals, it is also possible to simultaneously explain the observed dark matter abundance, over many orders of magnitude in the dark matter mass. | result 1.00 | 0.87 | 0.34 | hedged possibility 0.97 |
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The paper
Original abstract
We propose a new mechanism to simultaneously explain the observed dark matter abundance and the baryon asymmetry of the Universe. The mechanism is based on the Filtered Dark Matter scenario, where dark matter particles acquire a large mass during a first-order phase transition. This implies that only a small fraction of them are energetic enough to enter the advancing true vacuum bubbles and survive until today, while the rest are reflected and annihilate away quickly. We supplement this scenario with a CP-violating interaction, which creates a chiral asymmetry in the population of dark matter particles. In the false vacuum phase, a portal interaction quickly converts the dark sector chiral asymmetry into a Standard Model lepton asymmetry. The lepton asymmetry is then partially converted to a baryon asymmetry by standard electroweak sphaleron processes. We discuss the dependence of the generated asymmetry on the parameters of the model for two different portal interactions and demonstrate successful baryogenesis for both. For one of the portals, it is also possible to simultaneously explain the observed dark matter abundance, over many orders of magnitude in the dark matter mass.
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References
How the literature uses it
9 arXiv papers cite this in 9 sentences
Papers citing it · 5 sentences without a confident label
Cites it as background 4 papers
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The baryon asymmetry is generated by electroweak baryogenesis (EWBG) during the strongly first-order phase transition [ref] satisfying the Sakarov conditions [ref] .
Exploring CP-violation in $Y=0$ inert triplet with real singlet · Introduction · 0.81
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The idea of bubble filtering has been used in the context of dark matter and baryogenesis in several earlier works [ref] .
Filtered cogenesis of PBH dark matter and baryons · Filtering of dark fermions · 0.89
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Cosmological 1st-order Phase Transitions (1stOPTs) have been the subject of a lot of interest because they can generate Gravitational Waves (GWs) [ref] , set the abundance of dark matter [ref] , explain the baryon asymmetry [ref] , generate primordial black holes [ref] , primordial magnetic fields [ref] , or topological defects [ref] and offer a new access to supersymmetry breaking [ref] .
Friction pressure on relativistic bubble walls · Introduction · 0.98
What it cites · 49 sentences without a confident label
Builds on 1 paper
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[ref] with CP violating couplings and portal interactions, to explain the baryon–antibaryon asymmetry of the Universe.
Filtered Dark Matter at a First Order Phase Transition · Conclusions · 1.00
Uses the method or tool of 17 papers
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Instead, it would then be more appropriate to describe the dynamics of $χ$ particles in a formalism similar to the one developed in [ref] , where the trajectories of individual momentum modes are tracked through their interactions with the wall, to determine which $χ$ particles are able to enter the true vacuum phase and which ones are reflected back into the false vacuum.
Filtered Dark Matter at a First Order Phase Transition · Parameter Scans · 0.87
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Instead, it would then be more appropriate to describe the dynamics of $χ$ particles in a formalism similar to the one developed in [ref] , where the trajectories of individual momentum modes are tracked through their interactions with the wall, to determine which $χ$ particles are able to enter the true vacuum phase and which ones are reflected back into the false vacuum.
Primordial Black Holes from First-Order Cosmological Phase Transitions · Parameter Scans · 0.87
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Instead, it would then be more appropriate to describe the dynamics of $χ$ particles in a formalism similar to the one developed in [ref] , where the trajectories of individual momentum modes are tracked through their interactions with the wall, to determine which $χ$ particles are able to enter the true vacuum phase and which ones are reflected back into the false vacuum.
Detailed Calculation of Primordial Black Hole Formation During First-Order Cosmological Phase Transitions · Parameter Scans · 0.87
Uses data or values from 6 papers
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For the parameter points shown in <ref> the final baryon asymmetry matches the observed asymmetry in the Universe [ref] ,
Planck 2018 results. VI. Cosmological parameters · Benchmark Points · 0.83
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For the SM particles and $N_R$, we use diffusion coefficients found in the literature [ref] , i.e., [equation]
Baryogenesis at a Lepton-Number-Breaking Phase Transition · The Diffusion Coefficients · 0.99
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For the SM particles and $N_R$, we use diffusion coefficients found in the literature [ref] , i.e., [equation]
Erratum for "Supersymmetric Electroweak Baryogenesis" · The Diffusion Coefficients · 0.99
Cites as background 5 papers
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Note that there is an ongoing debate in the literature on electroweak baryogenesis regarding the most appropriate method for calculating the source term, with the main contenders being the semiclassical, or WKB, approach, and the vev-insertion approximation (VIA), in which the mass of the particle that develops a chiral asymmetry is treated perturbatively [ref] .
Electroweak baryogenesis from light fermion sources: a critical study · Solving the Transport Equations · 0.99
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where $N_R^j$ are three generations of heavy right-handed Majorana neutrino fields carrying one unit of lepton number (which could be part of a seesaw scenario that explains the smallness of the SM neutrino masses), $Λ_p$ is the suppression scale of the dimension-6 operator, which we assume to be the same for all generations, and the superscript $c$ denotes the charge-conjugation operation, $N_R^jc ≡i γ^2 (N_R^j)^*$ [ref] .
Neutrino physics · Model and General Mechanism · 0.98
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[ref] for review articles on this topic).
Electroweak baryogenesis · Introduction · 1.00
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