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arXiv · 1411.0528

On the pion distribution amplitude. Derivation, properties, predictions

N. G. Stefanis·S. V. Mikhailov·A. V. Pimikov
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Abstract

We provide an in-depth analysis of the $\pi$ distribution amplitude in terms of two different Gegenbauer representations. Detailed predictions for the $\pi-\gamma$ transition form factor are presented, obtained with light-cone sum rules. Various $\pi$ distribution amplitudes are tested and the crucial role of their endpoint behavior in the form-factor analysis is discussed. Comparison with the data is given.

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N. G. Stefanis, S. V. Mikhailov, A. V. Pimikov. 2014-11-03. On the pion distribution amplitude. Derivation, properties, predictions. https://doi.org/10.1007/s00601-014-0923-2

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