End-point behavior of the pion distribution amplitude

A. V. Pimikov; N. G. Stefanis; S. V. Mikhailov

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End-point behavior of the pion distribution amplitude

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arxiv 1010.4711 v3 pith:G4ZDDRSQ submitted 2010-10-22 hep-ph

End-point behavior of the pion distribution amplitude

S. V. Mikhailov , A. V. Pimikov , N. G. Stefanis This is my paper

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keywords pionamplitudebehaviorderivativedistributionend-pointslopeapproach

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We discuss the end-point behavior of the pion distribution amplitude (DA) and calculate its slope using QCD sum rules with nonlocal condensates. This is done in terms of the standard derivative and also with the help of an "integral derivative", recently obtained by us. Our approach favors a value of the slope of the order (or less) of the asymptotic DA and is in clear disagreement with flat-type pion DAs.

End-point behavior of the pion distribution amplitude

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