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Tests of large-Nc QCD from hadronic tau decay

S. Peris·B. Phily·E. de Rafael
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Abstract

We use the Aleph data on vector and axial-vector spectral functions to test simple duality properties of QCD in the large Nc limit, which emerge in the approximation of a minimal hadronic ansatz of a spectrum of narrow states. These duality properties relate the short- and long-distance behaviours of specific correlation functions, which are order parameters of spontaneous chiral symmetry breaking, in a way that we find well supported by the data.

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S. Peris, B. Phily, E. de Rafael. 2000-07-28. Tests of large-Nc QCD from hadronic tau decay. https://doi.org/10.1103/physrevlett.86.14

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