QCD sum rules I: Perturbative results for current correlators
- 1 June 1990
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear and Particle Physics
- Vol. 16 (6) , 785-793
- https://doi.org/10.1088/0954-3899/16/6/002
Abstract
New results are given to two-loop order and for quark masses of arbitrary flavour for the perturbative contribution to the coefficient function of the unit operator in the operator product expansion (OPE) of a vector correlator. A simple transformation of the presented results provides results for axial correlators.Keywords
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