Vacuum Saturation Hypothesis and QCD Sum Rules
High Energy Physics - Phenomenology
2010-11-01 v1
Abstract
The accuracy of the vacuum saturation hypothesis is discussed using the examples of vacuum expectation values of four-quark operators and the parameter , which determines the short-distance contribution to the 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.
Keywords
Cite
@article{arxiv.hep-ph/0105093,
title = {Vacuum Saturation Hypothesis and QCD Sum Rules},
author = {K. G. Chetyrkin and A. A. Pivovarov},
journal= {arXiv preprint arXiv:hep-ph/0105093},
year = {2010}
}
Comments
submitted to make it easier accessible for an interested reader