On a QCD-based pion distribution amplitude vs. recent experimental data

Preprint

27 April 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0104290

Abstract

Using QCD sum rules with nonlocal condensates the twist-2 pion distribution amplitude is determined by means of its moments and their confidence intervals, including also radiative corrections. An admissible set of pion distribution amplitudes is constructed in the a_2, a_4 plane of the Gegenbauer polynomial expansion coefficients. The determined a_2, a_4 region strongly overlaps with that extracted from the CLEO data by Schmedding and Yakovlev. Comparisons are given with results from Fermilab experiment E791 and recent lattice calculations.

Keywords

PION DISTRIBUTION AMPLITUDE
RECENT EXPERIMENTAL
BASED PION
QCD BASED
A_4
A_2

All Related Versions

Version 1, 2001-04-27, ArXiv
Version 1, 2001-03-12, ArXiv (Unconfirmed version)
Version 2, 2001-04-06, ArXiv (Unconfirmed version)
Version 3, 2001-08-30, ArXiv (Unconfirmed version)
Version 4, 2004-04-02, ArXiv (Unconfirmed version)

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