Research
Matter–antimatter asymmetry still provides no evidence of new physics
Phys.org ·
The Brief
- A Physics News article reports that the matter-antimatter asymmetry still provides no evidence of new physics.
- Known matter-antimatter differences do not account for the scale of the universe's matter dominance.
- The source leaves open the possibility that unknown physics is responsible for the imbalance.
Why it matters
It clarifies the status of one of cosmology's major open questions, showing that known CP violation falls short of explaining the observed matter excess.
Who’s affected
- physicists and cosmologists studying baryogenesis
- science readers interested in fundamental physics
- #matter-antimatter asymmetry
- #particle physics
- #cosmology
- #new physics
- #baryogenesis
The universe's dominance by ordinary matter is compelling evidence that matter and antimatter are not perfect reflections of each other. However, known differences do not explain the scale of this imbalance, leaving open the possibility that unknown physics is responsible. A new…