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arXiv · 0804.1877

Nucleon distribution amplitudes from lattice QCD

Meinulf Göckeler·Roger Horsley·Thomas Kaltenbrunner·Yoshifumi Nakamura·Dirk Pleiter·Paul E. L. Rakow·Andreas Schäfer·Gerrit Schierholz·Hinnerk Stüben·Nikolaus Warkentin·James M. Zanotti
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Abstract

We calculate low moments of the leading-twist and next-to-leading twist nucleon distribution amplitudes on the lattice using two flavors of clover fermions. The results are presented in the MSbar scheme at a scale of 2 GeV and can be immediately applied in phenomenological studies. We find that the deviation of the leading-twist nucleon distribution amplitude from its asymptotic form is less pronounced than sometimes claimed in the literature.

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Meinulf Göckeler, Roger Horsley, Thomas Kaltenbrunner, Yoshifumi Nakamura, Dirk Pleiter, Paul E. L. Rakow, Andreas Schäfer, Gerrit Schierholz, Hinnerk Stüben, Nikolaus Warkentin, James M. Zanotti. 2008-08-25. Nucleon distribution amplitudes from lattice QCD. https://doi.org/10.1103/physrevlett.101.112002

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