Finite energy chiral sum rules and tau spectral functions

@inproceedings{Davier1998FiniteEC,
  title={Finite energy chiral sum rules and tau spectral functions},
  author={M. Davier and Luca Girlanda and Andreas Hoecker and Jonathan Stern},
  year={1998}
}
  • M. Davier, Luca Girlanda, +1 author Jonathan Stern
  • Published 1998
  • Physics
  • A combination of finite energy sum rule techniques and Chiral Perturbation Theory (ChPT) is used in order to exploit recent ALEPH data on the non-strange tau vector (V) and axial-vector (A) spectral functions with respect to an experimental determination of the ChPT quantity L_{10}. A constrained fit of R_{\tau,V-A}^(k,l) inverse moments (l =0) adjusts simultaneously L_{10} and the nonperturbative power terms of the Operator Product Expansion. We give explicit formulae for the first k=0,1 and l… CONTINUE READING

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