Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-02-23
Phys.Rev. D73 (2006) 054009
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages
Scientific paper
10.1103/PhysRevD.73.054009
We study the operator product expansion (OPE) and quark-hadron duality for 2- and 3-point correlators of the axial (A) and pseudoscalar (P) currents of the light quarks. In the chiral limit these correlators are often dominated by nonperturbative power corrections leading to subtleties of quark-hadron duality relations and of the extraction of properties of light pseudoscalars. For the 2-point correlators, we show the sum rule for $
Lucha Wolfgang
Melikhov Dmitri
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