Theoretical Issues.

Vanderhaeghen, M.

Technical Information Center Oak Ridge Tennessee

关键词: Form factors;    Hadrons;    Accuracy;    Probes;    Quantum chromodynamics;   

RP-ID  :  DE2008910566

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The theoretical issues in the interpretation of the precision measurements of the nucleon-to-Delta transition by means of electromagnetic probes are highlighted. The results of these measurements are confronted with the state-of-the-art calculations based on chiral effective-field theories (EFT), lattice QCD, large-Nc relations, perturbative QCD, and QCD-inspired models. The link of the nucleon-to-Delta form factors to generalized parton distributions (GPDs) is also discussed.