On the Pion Distribution Amplitude: Derivation, Properties, Predictions

On the Pion Distribution Amplitude: Derivation, Properties, Predictions

We provide an in-depth analysis of the π distribution amplitude in terms of two different Gegenbauer representations. Detailed predictions for the π - γ transition form factor are presented, obtained with light-cone sum rules. Various π distribution amplitudes are tested and the crucial role of thei...

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Veröffentlicht in:Few-body systems 2015-09, Vol.56 (6-9), p.295-301
Hauptverfasser: Stefanis, N. G., Mikhailov, S. V., Pimikov, A. V.
Format: Artikel
Sprache:eng
Schlagworte:
Amplitudes
Atomic
Comparative analysis
Derivation
Few-body systems
Form factors
Hadrons
Heavy Ions
Molecular
Nuclear Physics
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Pions
Representations
Sum rules
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Beschreibung
Zusammenfassung:We provide an in-depth analysis of the π distribution amplitude in terms of two different Gegenbauer representations. Detailed predictions for the π - γ transition form factor are presented, obtained with light-cone sum rules. Various π 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.
ISSN:0177-7963
1432-5411
DOI:10.1007/s00601-014-0923-2