Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-12-23
Z.Phys. C68 (1995) 451-458
Physics
High Energy Physics
High Energy Physics - Phenomenology
LATEX, 15 pages, 6 figures, revised version contains corrected references
Scientific paper
10.1007/BF01620720
We analyze new QCD sum rules for the pion wave function $\phi_{\pi}(x)$, 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 $\pi$-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 $\pi'$-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.
Bakulev Alexander P.
Mikhailov S. V.
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