V. NEW REANALYSIS OF VARIOUS DIFFERENT REACTIONS A large number of charge-exchange reactions were studied in different laboratories, mainly in Saturne (SPES4 beam line) with the aim to study isospin-spin excitations. The corre- sponding missing mass data range from nucleon up to Δ(1232). Therefore these data are quite convenient for the present study. An important part of these data is presented in the following paragraphs and figures. Some preliminary reanalysis were previously shown [15]. In the following spectra, we add to the broad Δ(1232) bump, several narrow gaussians describing the structures observed previously, at the masses previously fixed by the analysis of the cross sections of the p + p → p + π $^{+}$+ X and p + p → p + p + X reactions studied at SPES3(Saturne). FIG. 6: (Color online.) Comparison between masses of narrow baryons extracted from SPES3 [3–5]and SPES4 [11, 13] data. Inserts (a) and (b) correspond respectively to θ = 0 . 8 ◦ and θ = 2 $^{◦}$. The cross-sections of the pp → nΔ ++ reaction were measured at different incident energies in different laboratories, and analyzed phenomenologically within the one-pion exchange model [16]. The binning and statistics of these old data are not very precise, therefore only one spectrum is shown. Fig. 7 shows the data at T$_{p}$ =0.97 GeV [17], the result of the cal- culation performed [16] (with Λ$_{π}$=0.63 GeV), and a few gaussians introduced as previously. Adding such gaussians appears to be essential for an accurately the data. These gaussians have all the same width ( σ =12 MeV), and their positions are fixed at the masses where nar- row exotic baryons were previously observed. The addition to Δ peak of gaussians describing VI. THE (P,N) REACTIONS A. The pp → n Δ ++ reaction. 6 FIG. 5: Same caption as in Fig. 4