Pion-photon Transition Distribution Amplitudes in the Spectral Quark Model
High Energy Physics - Phenomenology
2010-10-27 v2
Abstract
The vector and axial pion-photon transition distribution amplitudes are analyzed in the Spectral Quark Model. We proceed by the evaluation of double distributions through the use of a manifestly covariant calculation based on the alpha representation of propagators. As a result polynomiality is incorporated and calculations become rather simple. Explicit formulas, holding at the low-energy quark-model scale, are obtained. The corresponding form factors for the anomalous decay pi0 -> gamma gamma* and the radiative pion decays are also evaluated and confronted with the data.
Keywords
Cite
@article{arxiv.hep-ph/0701243,
title = {Pion-photon Transition Distribution Amplitudes in the Spectral Quark Model},
author = {Wojciech Broniowski and Enrique Ruiz Arriola},
journal= {arXiv preprint arXiv:hep-ph/0701243},
year = {2010}
}
Comments
13 pages, 3 figures