Theoretical value of sin(2\beta)

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SUMMARY

The theoretical value of sin(2β) is crucial in particle physics, particularly in the context of the BaBar experiment, which focuses on the decay channel B^0 → J/ψ K^0_S. The choice of this channel is attributed to its minimal theoretical error for sin(2β). Discussions indicate that while experimental values are readily available, deriving the theoretical value involves complex methodologies, potentially including lattice QCD for inference from existing measurements.

PREREQUISITES
  • Understanding of particle physics, specifically B meson decays
  • Familiarity with the Standard Model (SM) of particle physics
  • Knowledge of CP violation and its significance in particle interactions
  • Basic principles of lattice Quantum Chromodynamics (QCD)
NEXT STEPS
  • Research the theoretical frameworks surrounding B meson decays
  • Study the implications of CP violation in the Standard Model
  • Learn about lattice QCD techniques for theoretical predictions
  • Examine the experimental methodologies used in the BaBar experiment
USEFUL FOR

Particle physicists, researchers in quantum mechanics, and students studying the Standard Model and CP violation will benefit from this discussion.

Magister
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I am looking for the theoretical value of [itex]sin(2\beta)[/itex] but I just keep finding the experimental one. I supose there is a theoretical value because I have read that they choose in the BaBar experience the channel [itex]B^0\rightarrow J/\psi K^0_S[/itex] because the theoretical error for [itex]sin(2\beta)[/itex] was very small...

Thanks for your replies.
 
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Magister said:
I am looking for the theoretical value of [itex]sin(2\beta)[/itex] but I just keep finding the experimental one. I supose there is a theoretical value because I have read that they choose in the BaBar experience the channel [itex]B^0\rightarrow J/\psi K^0_S[/itex] because the theoretical error for [itex]sin(2\beta)[/itex] was very small...

Ahhh... never heard about this argument...
I thought cp phase is an input of SM. I guess it can be infered from existing measurements like K mixing via lattice QCD but that's very hard task.
 

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