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Catalyzed baryogenesis
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DOI：10.1007/JHEP10(2021)147.png)
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摘要
En 中文
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.
Keyword:
Cosmology of Theories beyond the SM
Beyond Standard Model
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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