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arXiv · 2207.07718

Isovector Meson Masses from QCD Sum Rules

Nasrallah F. Nasrallah·Karl Schilcher
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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.

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Nasrallah F. Nasrallah, Karl Schilcher. 2022-07-15. Isovector Meson Masses from QCD Sum Rules. https://doi.org/10.1142/s0217732323500098

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