Leading Twist Parton Distribution Amplitudes in Heavy Vector Mesons
1 Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
2 Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
3 CSSM, School of Chemistry and Physics, University of Adelaide, Adelaide SA 5005, Australia
4 Center for High Energy Physics, Peking University, Beijing 100871, China
5 Division of Physics, Argonne National Laboratory, Argonne, IL 60439, USA
Published online: 25 March 2016
We employed QCD’s Dyson-Schwinger equations (DSEs) for heavy quarks and obtained the leading twist parton distribution amplitudes (PDAs) in heavy vector mesons J/Ψ and ϒ. We found that all of the amplitudes are narrower than the asymptotic form, while they deviate from δ function. This indicates that the interaction between the two continent quarks are still important in the mesons consisted of charm and bottom quarks.
© Owned by the authors, published by EDP Sciences, 2016
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