%0 Journal Article %1 Hofmann2004Operator %A Hofmann, Ralf %D 2004 %K review %T Operator Product Expansion and Quark-Hadron Duality: Facts and Riddles %U http://arxiv.org/abs/hep-ph/0312130 %X We review the status of the practical operator product expansion (OPE), when applied to two-point correlators of QCD currents which interpolate to mesonic resonances, in view of the violations of local quark-hadron duality. Covered topics are: a mini-review of mesonic QCD sum rules in vacuum, at finite temperature, or at finite baryon density, a comparison of model calculations of current-current correlation functions in 2D and 4D with the OPE expression, a discussion of meson distribution amplitudes in the light of nonperturbatively nonlocal modifications of the OPE, and a reorganization of the OPE which (partially) resums powers of covariant derivatives.

@article{Hofmann2004Operator, abstract = {{We review the status of the practical operator product expansion (OPE), when applied to two-point correlators of QCD currents which interpolate to mesonic resonances, in view of the violations of local quark-hadron duality. Covered topics are: a mini-review of mesonic QCD sum rules in vacuum, at finite temperature, or at finite baryon density, a comparison of model calculations of current-current correlation functions in 2D and 4D with the OPE expression, a discussion of meson distribution amplitudes in the light of nonperturbatively nonlocal modifications of the OPE, and a reorganization of the OPE which (partially) resums powers of covariant derivatives.}}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {Hofmann, Ralf}, biburl = {https://www.bibsonomy.org/bibtex/265a378c5d7169cb802fe672dde42e4a4/cmcneile}, citeulike-article-id = {9911932}, citeulike-linkout-0 = {http://arxiv.org/abs/hep-ph/0312130}, citeulike-linkout-1 = {http://arxiv.org/pdf/hep-ph/0312130}, day = 23, eprint = {hep-ph/0312130}, interhash = {e1815863e0bb2ef0410402b50cb275f5}, intrahash = {65a378c5d7169cb802fe672dde42e4a4}, keywords = {review}, month = jan, posted-at = {2011-10-16 20:46:28}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {{Operator Product Expansion and Quark-Hadron Duality: Facts and Riddles}}, url = {http://arxiv.org/abs/hep-ph/0312130}, year = 2004 }