Temperature dependence of standard model CP violation.

  title={Temperature dependence of standard model CP violation.},
  author={T. Brauner and Olli Taanila and A. Tranberg and A. Vuorinen},
  journal={Physical review letters},
  volume={108 4},
We analyze the temperature dependence of CP violation effects in the standard model by determining the effective action of its bosonic fields, obtained after integrating out the fermions from the theory and performing a covariant gradient expansion. We find nonvanishing CP violating terms starting at the sixth order of the expansion, albeit only in the C-odd-P-even sector, with coefficients that depend on quark masses, Cabibbo-Kobayashi-Maskawa matrix elements, temperature and the magnitude of… Expand
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