Generalized parton distributions from nucleon form factor data
By M. Diehl, T. Feldmann, R. Jakob, P. Kroll. 2004
171 citations recorded by the source corpus.
Abstract.We present a simple empirical parameterization of the x- and t-dependence of generalized parton distributions at zero skewness, using forward parton distributions as input. A fit to experimental data for the Dirac, Pauli and axial form factors of the nucleon allows us to discuss quantitatively the interplay between longitudinal and transverse partonic degrees of freedom in the nucleon (“nucleon tomography”). In particular we obtain the transverse distribution of valence quarks at given momentum fraction x. We calculate various moments of the distributions, including the form factors that appear in the handbag approximation to wide-angle Compton scattering. This allows us to estimate the minimal momentum transfer required for reliable predictions in that approach to be around $\vert t\vert \simeq 3 {\rm GeV}^2$. We also evaluate the valence contributions to the energy-momentum form factors entering Ji’s sum rule.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/a1203f72b6535b1a2a3446fd265bbae962d57ad5
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In Nuclear and High Energy Physics
Citations in the corpus
- Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions (2007, background): “Since the coupling is probed in the conformal window, this kinematic feature can explain why the measured proton Dirac form factor scales as Q4F1(Q2) ' const up to Q2 35 GeV2 [49] with little sign of the logarithmic running of the QCD coupling.”
- Diquark correlations in hadron physics: Origin, impact and evidence (2020, unknown): “[589] (Diehl05), the DSE calculation of Ref.”