Isovector Meson Masses from QCD Sum Rules

Abstract

We present a calculation of the masses of the isovector mesons ( vector, scalar and pseudoscalar including the established recurrences) using a new method of finite energy QCD sum rules. The method is based on the idea of choosing a suitable integration kernel which minimizes the occurring integral over the cut in the complex energy (squared) plane. We obtain remarkably stable results in a wide range R, where R is the radius of the integration contour. The sum rule predictions agree with the experimental values within the expected accuracy showing that QCD describes single resonances.

Typos and misprints corrected

References in corpus (2)

• QCD vacuum condensates from tau-lepton decay data
• Precision physics with inclusive QCD processes