The longitudinal and transverse responses in the inclusive electron scattering
R. Cenni, F. Conte, P. Saracco
Abstract
The splitting between the charge-longitudinal and spin-transverse responses is explained in a model whose inputs are the effective interactions in the particle-hole channels in the first order boson loop expansion. The interplay between ω-meson exchange and box diagrams mainly governs the longitudinal response, while in the transverse one the direct Δ excitations almost cancel the one-loop correction and the response is ruled by the ρ-meson rescattering.
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