Off-shell pion electromagnetic form factor from a gauge-invariant Nambu-Jona-Lasinio model
作者： C. Weiss
DOI: 10.1016/0370-2693(94)90999-7
关键词: Vertex function 、 Nambu–Jona-Lasinio model 、 Pion 、 Gauge theory 、 Elementary particle 、 Particle physics 、 Invariant (physics) 、 Photon 、 Chiral perturbation theory 、 Physics
摘要: Abstract The off-shell electromagnetic vertex function of pions and kaons is studied in a bosonized Nambu-Jona-Lasinio model with gauge-invariant proper-time cutoff. In the chiral limit, slope pion form factor respect to 4-momentum equal on-shell photon momentum. K 0 zero, that ± about 0.85 times pion. We compare results recent calculation perturbation theory.
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