Baryon transition current structure (N(1535) negative parity F2 form factor) revisited: Insights from Patterson function analysis

The N(1535) negative‑parity Pauli‑type transition current is revisited using Patterson‑function analysis applied directly to empirical F₂ form‑factor data. This model‑independent reconstruction produces a sharply localized positive density profile, dominated by a central peak with a half‑maximum radius of 0.107 fm, underscoring the compact nature of the distribution. Comparative analysis shows that the normalized F₁ Patterson profiles of N(1535) and the N(1440) Roper excitation overlap closely, while the F₂ profiles of N(1535), N(1440), and the Δ(1232) magnetic and electric quadrupole transitions form a coherent group. These findings highlight structural correlations among baryon excitations and demonstrate the sensitivity of Patterson analysis to subtle spatial variations in hadronic transition currents.