On the pion distribution amplitude. Derivation, properties, predictions

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

doi:10.1007/s00601-014-0923-2

On the pion distribution amplitude. Derivation, properties, predictions

High Energy Physics - Phenomenology 2014-12-01 v1

Authors: 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.

Keywords

pion distribution amplitude Gegenbauer representation pi-gamma transition form factor light-cone sum rules endpoint behavior QCD phenomenology

Cite

@article{arxiv.1411.0528,
  title  = {On the pion distribution amplitude. Derivation, properties, predictions},
  author = {N. G. Stefanis and S. V. Mikhailov and A. V. Pimikov},
  journal= {arXiv preprint arXiv:1411.0528},
  year   = {2014}
}

Comments

7 pages, 3 figures. Based on talk by first author at LIGHTCONE 2014, May 26-30, 2014, Raleigh, NC, USA. Accepted for publication in Few-Body Systems

On the pion distribution amplitude. Derivation, properties, predictions

Abstract

Keywords

Cite

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