Quark imaging in the proton via quantum phase-space distributions

By A. Belitsky, X. Ji, F. Yuan. 2003

229 citations recorded by the source corpus.

We develop the concept of quantum phase-space (Wigner) distributions for quarks and gluons in the proton. To appreciate their physical content, we analyze the contraints from special relativity on the interpretation of elastic form factors, and examine the physics of the Feynman parton distributions in the proton's rest frame. We relate the quark Wigner functions to the transverse-momentum dependent parton distributions and generalized parton distributions, emphasizing the physical role of the skewness parameter. We show that the Wigner functions allow us to visualize quantum quarks and gluons using the language of classical phase space. We present two examples of the quark Wigner distributions and point out some model-independent features.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1903eb9da76847b7f41611dcd7c90d43e8571d50

How researchers see this paper

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In Nuclear and High Energy Physics

1. Andreas Schäfer
2. D. Ostermeier
3. M. Diehl
4. P. Kroll

Citations in the corpus

• Generalized parton correlation functions for a spin-0 hadron (2008, unknown): “[2, 3, 4, 5]).”
• Elements of a theory for multiparton interactions in QCD (2011, background): “A related interpretation for generalized parton distributions can be found in [59].”