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Extracting the {\(\rho\)} meson wavefunction from HERA data. (English) Zbl 1294.81277

Summary: We extract the light-cone wavefunctions of the \(\rho\) meson using the HERA data on diffractive \(\rho\) photoproduction. We find good agreement with predictions for the distribution amplitude based on QCD sum rules and from the lattice. We also find that the data prefer a transverse wavefunction with enhanced end-point contributions.

MSC:

81V05 Strong interaction, including quantum chromodynamics
81V35 Nuclear physics

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References:

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