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arXiv · hep-ph/0408003

Vector and Axial-Vector correlators in a instanton-like quark model

A. E. Dorokhov
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Abstract

The behavior of the vector Adler function at spacelike momenta is studied in the framework of a covariant chiral quark model with instanton-like quark-quark interaction. The model reproduces the Adler function and $V-A$ correlator extracted from the ALEPH and OPAL data on hadronic $τ$ lepton decays, transformed into the Euclidean domain via dispersion relations. The leading order contribution from hadronic part of the photon vacuum polarization to the anomalous magnetic moment of the muon, $a_μ^{\mathrm{hvp}(1)} $, is estimated.

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A. E. Dorokhov. 2004-12-29. Vector and Axial-Vector correlators in a instanton-like quark model. https://doi.org/10.1142/s0217751x05021993

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