Asymmetric dark matter and baryogenesis from 
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Fornal, Bartosz; Shirman, Yuri; Tait, Tim M. P.; West, Jennifer Rittenhouse

doi:10.1103/physrevd.96.035001

Cited by 27 publications

(22 citation statements)

References 36 publications

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“…The impact of cosmological phase transitions on DM has been studied in a variety of different contexts [8]: a phase transition may alter the expansion rate of the Universe during freeze-out [9][10][11], inject entropy [10][11][12], alter DM stability [13][14][15], alter DM properties during freezein [16,17] (see also [18]), produce DM nonthermally [19][20][21][22], or produce an excess of DM over antimatter [23][24][25][26][27][28][29]. Conversely, a dark sector may trigger an electroweak FOPT [30][31][32][33][34][35][36][37][38][39][40].…”

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confidence: 99%

Filtered Dark Matter at a First Order Phase Transition

2020

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We describe a new mechanism of dark matter production in the early Universe, based on the dynamics of a first order phase transition. We assume that dark matter particles acquire mass during the phase transition, making it energetically unfavourable for them to enter the expanding bubbles of the massive phase. Instead, most of them are reflected off the advancing bubble walls and quickly annihilate away in the massless phase. The bubbles eventually merge as the phase transition is completed, and only the dark matter particles which have entered the bubbles survive to constitute the observed dark matter today. This mechanism can produce dark matter with masses from the GeV scale to above the PeV scale, including a large region of viable parameter space beyond the Griest-Kamionkowski bound. Current and future direct detection and collider experiments can probe much of the viable parameter space.

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confidence: 99%

Filtered Dark Matter at a First Order Phase Transition

2020

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“…One phase can be rotated away by redefining the phase ofΦ † 1Φ2 , leaving three physical phase combinations [31]. It is straightforward to show that for natural values of parameters the amount of CP violation in the model meets the criteria for a successful baryogenesis [1].…”

Section: Cp Violation and Phase Transitionmentioning

confidence: 99%

“…where n i denotes the number density of a given particle species, D i is the diffusion constant, Γ ij is the diffusion rate, k j is the number of degrees of freedom times a factor arising from statistics and γ i is the CP violating source [35]. In our model there is a set of twelve diffusion equations and eight constraints coming from the Yukawa and instanton interactions [1]. The solution to this set of diffusion equations is shown in Fig.…”

Section: Bubble Nucleation and Lepton Asymmetrymentioning

confidence: 99%

Dark Matter and Baryogenesis from non-Abelian Gauged Lepton Number

Fornal

2017

Cosmology, Gravitational Waves and Particles

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A simple model is constructed based on the gauge symmetry SU (3) c × SU (2) L × U (1) Y × SU (2) , with only the leptons transforming nontrivially under SU (2) . The extended symmetry is broken down to the Standard Model gauge group at TeV-scale energies. We show that this model provides a mechanism for baryogenesis via leptogenesis in which the lepton number asymmetry is generated by SU (2) instantons. The theory also contains a dark matter candidate -the SU (2) partner of the right-handed neutrino. * Plenary talk given at the Conference on Cosmology, Gravitational Waves and Particles, Singapore, February 6-10, 2017; based on the work: B. Fornal, Y. Shirman, T. M. P. Tait and J. R. West, arXiv:1703.00199 [hep-ph] [1].

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“…Also there the emphasis is on constructing a consistent dark matter model with a gauged lepton number. More recently, a gauged SU (2) ℓ model was considered by [12] with an emphasis on producing a dark matter candidate and baryogenesis.…”

Section: Introductionmentioning

confidence: 99%

Study of gauged lepton symmetry signatures at colliders

Chang

2018

Phys. Rev. D

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We construct a new gauged U (1) ℓ lepton number model which is anomaly-free for each SM generation. The active neutrino masses are radiatively generated with a minimal scalar sector. The phenomenology and collider signals are studied. The interference effects among the new gauge boson, Z ℓ , photon, and Z-boson can be probed at the future e + e − colliders even if the center-of-mass energy is below the mass of Z ℓ . Moreover, the electroweak precision sets a stringent bound on the mass splitting of the new lepton doublets.

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Asymmetric dark matter and baryogenesis from SU(2)ℓ

Cited by 27 publications

References 36 publications

Filtered Dark Matter at a First Order Phase Transition

Filtered Dark Matter at a First Order Phase Transition

Dark Matter and Baryogenesis from non-Abelian Gauged Lepton Number

Study of gauged lepton symmetry signatures at colliders

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