Nucleon Resonance Transition Formfactors

28 Sep 2015  ·  Aznauryan I. G., Burkert V. D., Mokeev V. I. ·

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