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arXiv · hep-ph/9412366

QCD Sum Rules For Pion Wave Function Revisited

A. P. Bakulev·S. V. Mikhailov
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Abstract

We analyze new QCD sum rules for the pion wave function $ϕ_π(x)$, obtained recently by A.V. Radyushkin in the framework of the non-local vacuum condensates method for non-diagonal correlators, and suggest a new approach for extracting wave functions of the $π$-meson and of its first resonances. As a result we obtain approximately the same form of the pion wave function by using two different methods and for two different ansatzes of non-local quark condensates. We predict the mass of the $π'$-resonance and obtain the form of its wave function. The first method uses integrated (in a sense) properties of ansatzes and may be considered as an alternative to traditional borel SR.

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A. P. Bakulev, S. V. Mikhailov. 1997-02-05. QCD Sum Rules For Pion Wave Function Revisited. https://doi.org/10.1007/bf01620720

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