Continuity of generalized parton distributions for the pion virtual Compton scattering

Ho-Meoyng Choi (Carnegie Mellon U.) , Chueng-Ryong Ji (North Carolina State U.) , L.S. Kisslinger (Carnegie Mellon U.)

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classification ✦ hep-ph

keywords gpdsscatteringwaveboundcomptoncontinuitydistributionsdvcs

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We discuss a consistent treatment of the light-front gauge-boson and meson wave functions in the analyses of the generalized parton distributions(GPDs) and the scattering amplitudes in deeply virtual Compton scattering(DVCS) for the pion. The continuity of the GPDs at the crossover, where the longitudinal momentum fraction of the probed quark is same with the skewedness parameter, and the finiteness of the DVCS amplitude are ensured if the same light-front radial wave function as that of the meson bound state wave function is used for the gauge boson bound state arising from the pair-creation(or nonvalence) diagram. The frame-independence of our model calculation is also guaranteed by the constraint from the sum rule between the GPDs and the form factors.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

Generalized parton distributions of valence, sea, and gluon components of the proton
hep-ph 2026-04 unverdicted novelty 6.0

Using basis light-front quantization wave functions, the authors calculate GPDs for proton components at low resolution scale and obtain results qualitatively similar to but smaller than the GUMP1.0 global extraction.