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Probing nucleons with photons at the quark level
classification
⚛️ nucl-th
hep-ph
keywords
quarkvertexelectromagneticlevelquark-photonalongcomptondescription
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The description of electromagnetic interactions with hadrons from the quark level requires knowledge of the underlying quark-gluon ingredients. I discuss some properties of the quark-photon vertex and quark Compton vertex, along with the role of electromagnetic gauge invariance and vector-meson dominance. A simple parametrization for the quark-photon vertex is given.
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