EPJ Web Conf.
Volume 113, 201621st International Conference on Few-Body Problems in Physics
|Number of page(s)||4|
|Published online||25 March 2016|
Leading Twist Parton Distribution Amplitudes in Heavy Flavor Pseudoscalar Mesons From Dyson-Schwinger Equations of QCD
1 Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
2 CSSM, School of Chemistry and Physics, University of Adelaide, Adelaide SA 5005, Australia
3 Theory Group, Physics Division, Argonne National Laboratory, 9700 S. Cass Ave., Lemont, IL 60439, USA
Published online: 25 March 2016
We compute the valence-quark leading twist parton distribution amplitudes (PDAs) of heavy pseudoscalar mesons ηc and ηb and find that they are both broader than the δ-like function while narrower than the asymptotic one. The evolution of distribution amplitude with momentum scale is then considered and PDAs will turn to a asymptotic form when the momentum goes to infinity.
© Owned by the authors, published by EDP Sciences, 2016
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