Wojciech Broniowski, Enrique Ruiz Arriola, Krzysztof Golec-Biernat
Published 2008-04-04Version 1
Generalized Parton Distributions of the pion are evaluated in chiral quark models with the help of double distributions. As a result the polynomiality conditions are automatically satisfied. In addition, positivity constraints, proper normalization and support, sum rules, and soft pion theorems are fulfilled. We obtain explicit expressions holding at the low-energy quark-model scale, which exhibit no factorization in the t-dependence. The crucial QCD evolution of the quark-model distributions is carried out up to experimental or lattice scales. The obtained results for the Parton Distribution Function and the Parton Distribution Amplitude describe the available experimental and lattice data, confirming that the quark-model scale is low, around 320 MeV.
Comments: presented by WB at SCADRON 70 ``Scalar Mesons and Related Topics, Lisbon, 11-16 February 2008, 6 pages
Journal: AIP Conf.Proc.1030:286-290,2008
Generalized Quark Transversity Distribution of the Pion in Chiral Quark Models
Transversity form factors of the pion in chiral quark models
Generalized parton distributions of the pion in chiral quark models and their QCD evolution
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