QCD-based pion distribution amplitudes confronting experimental data
نویسندگان
چکیده
منابع مشابه
QCD-based pion distribution amplitudes confronting experimental data
We use QCD sum rules with nonlocal condensates to re-calculate more accurately the moments and their confidence intervals of the twist-2 pion distribution amplitude including radiative corrections. We are thus able to construct an admissible set of pion distribution amplitudes which define a reliability region in the a2, a4 plane of the Gegenbauer polynomial expansion coefficients. We emphasize...
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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 a2, a4 plane of the Gegenbauer polynomial expansion coefficients. The determined a2, a4 region strongly overlaps with that extracte...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2001
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(01)00517-2