Is CPT symmetry violated in beta decay?

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SUMMARY

CP-symmetry violation is confirmed in beta decay, indicating that T-symmetry may not hold within the framework of Local Quantum Field Theory (LQFT). Observations of P, CP, and T symmetry violations have been documented, with the latest evidence of T violation in B decays provided by the BABAR collaboration. While LQFT predicts CPT invariance, there is currently no evidence to suggest that it has been violated.

PREREQUISITES
  • Understanding of CP-symmetry and its implications in particle physics
  • Familiarity with Local Quantum Field Theory (LQFT)
  • Knowledge of beta decay processes
  • Awareness of experimental results from the BABAR collaboration
NEXT STEPS
  • Research the implications of CP-symmetry violation in particle physics
  • Study the principles of Local Quantum Field Theory (LQFT)
  • Examine the experimental findings related to T-symmetry violations in B decays
  • Explore the concept of CPT invariance and its significance in theoretical physics
USEFUL FOR

Physicists, researchers in particle physics, and students studying quantum field theory who are interested in the implications of symmetry violations in fundamental interactions.

entropy1
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I read that CP-symmetry violation occurs (or can occur) in beta decay. Does that mean that, since CPT-symmetry must hold, there is no T-symmetry?
 
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yes, within LQFT which appears to be our most complete theory.
 
One should note that the violation of P, CP, and T symmetry are all shown directly by observation, most recently the T violation in B decays by the BABAR collaboration. I'm to lazy to google for it. The usual kind of relativistic QT, i.e., local relativistic QFT with a stable ground state, predicts CPT invariance, which so far has not been observerd to be violated.
 

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