@Article{Noguera+Vento2010,
author="Noguera, S.
and Vento, V.",
title="The pion transition form factor and the pion distribution amplitude",
journal="European Physical Journal A",
year="2010",
publisher="Springer",
volume="46",
number="2",
pages="197--205",
abstract="Recent BaBar data on the pion transition form factor, whose Q(2)-dependence is much steeper then predicted by asymptotic Quantum Chromodynamics (QCD), have caused a renewed interest in its theoretical description. We present here a formalism based on a model-independent description for low photon virtuality and a high photon virtuality description based on QCD, which match at a scale Q(0). The high photon virtuality description incorporates a flat pion distribution amplitude, phi(x) = 1, at the matching scale Q(0) and QCD evolution from Q(0) to Q > Q(0). The flat pion distribution is connected, through soft pion theorems and chiral symmetry, to the pion valence parton distribution at the same low scale Q(0). The procedure leads to a good description of the data, and by incorporating additional twist-three effects, to an excellent description of the data.",
optnote="ISI:000284869600005",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=312), last updated on Fri, 06 May 2011 12:28:05 +0000",
issn="1434-6001",
doi="10.1140/epja/i2010-11029-6",
opturl="http://arxiv.org/abs/1001.3075",
opturl="https://doi.org/10.1140/epja/i2010-11029-6",
archivePrefix="arXiv",
eprint="1001.3075",
language="English"
}