Is CP Violation Evolving Over Time and Explaining Baryogenesis?

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SUMMARY

The discussion centers on the evolving nature of CP violation and its implications for baryogenesis. Participants express interest in the relationship between CP violation and T violation, emphasizing the significance of time reversal invariance. The conversation highlights the potential for CP violation to have been more pronounced in the early universe, suggesting that this could provide insights into the Sakharov mechanism, which currently lacks sufficient CP violation to explain baryogenesis. Theoretical considerations regarding the parameters of the Standard Model and their impact on T asymmetry over time are also explored.

PREREQUISITES
  • Understanding of CP violation and its relation to T violation
  • Familiarity with the Sakharov mechanism and baryogenesis
  • Knowledge of the Standard Model of particle physics
  • Basic concepts of cosmology, particularly initial conditions of the Big Bang
NEXT STEPS
  • Research recent experiments on CP violation, such as those involving Kl and Ks mesons
  • Explore the implications of time reversal invariance in particle physics
  • Investigate the role of initial conditions in the Big Bang and their effects on T asymmetry
  • Study the current limitations of the Sakharov mechanism in explaining baryogenesis
USEFUL FOR

Particle physicists, cosmologists, and researchers interested in the fundamental symmetries of the universe and the mechanisms behind baryogenesis.

Dmitry67
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Are there any new experiments/results regarding the subject? Like Kl, Ks, and other weird things?

I am interested in the subject mostly because CP voliation = T violation, and T violation for me is the deepest mystery.
 
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CP=T if you believe TCP, whilch can be qjuestioned on the experimental level.
Why is "T violation for me is the deepest mystery" when almost everything you see is not time reversal invariant?
 
No, macroscopic T assymetry is not a mystery for me at all.
Just a consequence of the Initial conditions at the BB (low entropy)

microscopic T assymetry is much stranger.
I would be even not surprised if parameters of the standard model, responsible for T assymetry, would decrease gradually as more an more time is elapsed after BB

Is it possible that CP violation was bigger in early Universe? Would it help to explain the bariogenesis? I know that current CP violation is not enough for Sakharov mechanism.
 

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