HERMES impact for the access of Compton form factors

Abstract

We utilize the DVCS asymmetry measurements of the HERMES collaboration for access to Compton form factors in the deeply virtual regime and to generalized parton distributions. In particular, the (almost) complete measurement of DVCS observables allows us to map various asymmetries into the space of Compton form factors, where we still rely in this analysis on dominance of twist-two associated Compton form factors. We compare this one-to-one map with local Compton form factor fits and a model dependent global fit.

54 pages, 11 figures, 3 tables

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• Precision Studies of QCD in the Low Energy Domain of the EIC
• Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target
• Description and interpretation of DVCS measurements
• Longitudinal target-spin asymmetries for deeply virtual Compton scattering
• Test of two new parameterizations of the Generalized Parton Distribution $H$
• Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering
• Deeply Virtual Compton Scattering at a Proposed High-Luminosity Electron-Ion Collider
• Generalized Parton Distributions: visions, basics, and realities
• Where do we stand with a 3-D picture of the proton?
• Dual parametrization of generalized parton distributions in two equivalent representations
• On Extraction of Twist-Two Compton Form Factors from DVCS Observables Through Harmonic Analysis
• Generalized Parton Distributions and Deeply Virtual Compton Scattering
• Accessing Compton Form Factors at the Electron Ion Collider in China: An Impact study on $\text{Im}\mathcal{E}$
• Global analysis of generalized parton distributions -- collider kinematics --
• On Deeply Virtual Compton Scattering at next-to-leading order
• Unified and optimal frame choice for generalized parton distributions
• Assessing the impact of the electron ion collider in China on Deeply Virtual Compton Scattering
• Resolving kinematic ambiguities in QCD predictions for Deeply Virtual Compton Scattering
• Next to leading order analysis of DVCS and TCS
• New framework for extracting GPDs from exclusive photon electroproduction