Catalyzed baryogenesis

Abstract

A novel mechanism, “catalyzed baryogenesis”, is proposed to explain the observed baryon asymmetry in our universe. In this mechanism, the motion of a ball-like catalyst provides the necessary out-of-equilibrium condition, its outer wall has CP-violating interactions with the Standard Model particles, and its interior has baryon number violating interactions. We use the electroweak-symmetric ball model as an example of such a catalyst. In this model, electroweak sphalerons inside the ball are active and convert baryons into leptons. The observed baryon number asymmetry can be produced for a light ball mass and a large ball radius. Due to direct detection constraints on relic balls, we consider a scenario in which the balls evaporate, leading to dark radiation at testable levels.

Muon $(g-2)$ and XENON1T Excess with Boosted Dark Matter in $L_μ-L_τ$ Model

“…The latest Fermilab measurements have also led to several recent works on updating possible theoretical models with new data. For example, see [5][6][7][8][9][10][11] for minimal dark matter (DM) motivated scenarios, [12][13][14] for axion like particle (ALP) motivated scenarios, [15,16] for gauged lepton flavour models like U (1) Lµ−Lτ and for other phenomenological scenarios like supersymmetry, multi-Higgs doublet models etc. and other implications of this new measurement.…”

Origin of nontopological soliton dark matter: solitosynthesis or phase transition

“…An NTS can also have gauge charges [7][8][9][10][11] or even topological charges [12] in the presence of a gauge group. Other studies include [13][14][15][16][17][18][19][20][21][22]; see [23,24] for reviews.…”