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arXiv · hep-ph/9605279

Deep Inelastic Scattering and Light-Cone Wave Functions

V. M. Belyaev·Mikkel B. Johnson
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Abstract

In the framework of light-cone QCD sum rules, we study the valence quark distribution function $q(x_B)$ of a pion for moderate $x_B$. The sum rule with the leading twist-2 wave function gives $q(x_B)=φ_π(x_B)$. Twist-4 wave functions give about 30\% for $x_B\sim 0.5$. It is shown that QCD sum rule predictions, with the asymptotic pion wave function, are in good agreement with experimental data. We found that a two-hump profile for the twist-2 wave function leads to a valence quark disribution function that contradicts experimental data.

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V. M. Belyaev, Mikkel B. Johnson. 1996-05-11. Deep Inelastic Scattering and Light-Cone Wave Functions. https://arxiv.org/abs/hep-ph/9605279

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