Vacuum Saturation Hypothesis and QCD Sum Rules

Details Vacuum Saturation Hypothesis and QCD Sum Rules Vacuum Saturation Hypothesis and QCD Sum Rules

2001-05-10

arxiv.org/abs/hep-ph/0105093v1

Nuovo Cim.A100:899-906,1988

Physics

High Energy Physics

High Energy Physics - Phenomenology

submitted to make it easier accessible for an interested reader

Scientific paper

10.1007/BF02789008

The accuracy of the vacuum saturation hypothesis is discussed using the examples of vacuum expectation values of four-quark operators and the parameter $B$, which determines the short-distance contribution to the $K^0 - \bar K^0$ mixing. Note added: The approach based on sum rules in position (x-)space as elaborated in the paper is relevant and useful tool for the current phenomenology. In particular, it provides the unique possibility of direct non-perturbative estimation of the VEV's of four-quark operators renormalized in any scheme, including the MSbar one.

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