Consistent off-shell π N N vertex and nucleon self-energy
classification
⚛️ nucl-th
keywords
nucleonvertexconsistentpion-nucleonself-energyadmixturecalculationcoupling
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We present a consistent calculation of half-off-shell form factors in the pion-nucleon vertex and the nucleon self-energy. Numerical results are presented. Near the on-shell point the pion-nucleon vertex is dominated by the pseudovector coupling, while at large nucleon invariant masses we find a sizable pseudoscalar admixture.
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