The Strong CP problem and axions

@article{Peccei2006TheSC,
  title={The Strong CP problem and axions},
  author={R. Peccei},
  journal={Lecture Notes in Physics},
  year={2006},
  volume={741},
  pages={3-17}
}
  • R. Peccei
  • Published 2006
  • Physics
  • Lecture Notes in Physics
  • I describe how the QCD vacuum structure, necessary to resolve the U(1)_A problem, predicts the presence of a PabbrevPparity transformation, TabbrevTtime reversal transformation, and CPabbrevCPcharge conjugation transformation followed by party transformation violating term proportional to the vacuum angle θ. To agree with experimental bounds, however, this parameter must be very small (θ < 10-9). After briefly discussing some other possible solutions to this, so-called, strong CP problem, I… CONTINUE READING
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