Nucleon Resonance Transition Formfactors
We discuss recent results from CLAS on electromagnetic resonance transition amplitudes and their dependence on the distance scale ($Q^2$). From the comparison of these results with most advanced theoretical calculations within QCD-based approaches there is clear evidence that meson-baryon contributions are present and important at large distances, i.e. small $Q^2$, and that quark core contributions dominate the short distance behavior.
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Nuclear Experiment
High Energy Physics - Lattice
High Energy Physics - Phenomenology
Nuclear Theory