We consider the determination of the light-quark masses obtained from QCD sum rules. We show that small-size instantons contribute sizeable corrections to these sum rules. It therefore seems impossible to provide an accurate determination of the light-quark masses in the QCD sum rules framework.
INSTANTON EFFECTS IN THE LIGHT-QUARK MASSES DETERMINATION FROM QCD SUM-RULES
GABRIELLI, Emidio;
1993-01-01
Abstract
We consider the determination of the light-quark masses obtained from QCD sum rules. We show that small-size instantons contribute sizeable corrections to these sum rules. It therefore seems impossible to provide an accurate determination of the light-quark masses in the QCD sum rules framework.File in questo prodotto:
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