# Reconstruction of heavy quark current correlators at Oα s^3 - High Energy Physics - Phenomenology

Abstract: We construct approximate formulas for the O\alpha s^3 QCD contributions tovector, axial-vector, scalar and pseudo-scalar quark current correlators, whichare valid for arbitrary values of momenta and masses. The derivation is basedon conformal mapping and the Pade approximation procedure and incorporatesknown expansions in the low energy, threshold and high energy regions. We useour results to estimate additional terms in these expansions.

Author: Y. Kiyo, A. Maier, P. Maierhoefer, P. Marquard

Source: https://arxiv.org/