On the use of the Operator Product Expansion to constrain the hadron spectrum

Details On the use of the Operator Product Expansion to constrain the hadron spectrum On the use of the Operator Product Expansion to constrain the hadron spectrum

2002-07-04

arxiv.org/abs/hep-ph/0207060v2

Phys.Rev.D67:096001,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX. A few explanatory comments added. Conclusions unchanged. Version to appear in Journal

Scientific paper

10.1103/PhysRevD.67.096001

We call into question a recently proposed idea on how the short-distance
behavior of QCD correlation functions constrains hadronic states to become
degenerate parity eigenstates as one goes up in the spectrum. In particular, we
point out that the sum rules which have been proposed in this context are in
general regulator dependent, and thus ill-defined.

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