Next-to-next-to-leading-order charm-quark contribution to the CP violation parameter ϵ(K) and ΔM(K).

@article{Brod2012NexttonexttoleadingorderCC,
  title={Next-to-next-to-leading-order charm-quark contribution to the CP violation parameter ϵ(K) and ΔM(K).},
  author={J. Brod and M. Gorbahn},
  journal={Physical review letters},
  year={2012},
  volume={108 12},
  pages={
          121801
        }
}
  • J. Brod, M. Gorbahn
  • Published 2012
  • Physics, Medicine
  • Physical review letters
  • The observables ϵ(K) and ΔM(K) play a prominent role in particle physics due to their sensitivity to new physics at short distances. To take advantage of this potential, a firm theoretical prediction of the standard-model background is essential. The charm-quark contribution is a major source of theoretical uncertainty. We address this issue by performing a next-to-next-to-leading-order QCD analysis of the charm-quark contribution η(cc) to the effective |ΔS|=2 Hamiltonian in the standard model… CONTINUE READING

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