Peláez Sagredo, José Ramón2023-06-202023-06-202005-01-30[1] J. R. Peláez and F. J. Ynduráin, Phys. Rev. D68, 074005 (2003) [2] J. R. Peláez and F. J. Ynduráin, Phys. Rev. D69, 114001 (2004) [3] B.Ananthanarayan, G.Colangelo, J.Gasser and H.Leutwyler, Phys. Rept. 353, 207 (2001) [4] G. Colangelo, J. Gasser and H. Leutwyler, Nucl. Phys. B 603, 125 (2001); S. Descotes-Genon, N. H. Fuchs, L. Girlanda and J. Stern, Eur. Phys. J. C 24, 469 (2002); R. Kaminski, L. Lesniak and B. Loiseau, Phys. Lett. B 551, 241 (2003); P. Buettiker, S. Descotes-Genon and B. Moussallam, Eur. Phys. J. C 33, 409 (2004). [5] K. Hagiwara et al., Phys. Rev. D66 010001 (2002). [6] Biswas, N. N., et al., Phys. Rev. Letters, 18, 273 (1967) [π ̅ π ̅, π^(+)π − and π ^(0)π ̅]; Cohen, D. et al., Phys. Rev. D7, 661 (1973) [π ̅ π ̅);Robertson, W. J., Walker, W. D., and Davis, J. L., Phys. Rev. D7, 2554 (1973) [π^(+) π ̅]; Hoogland, W., et al. Nucl. Phys., B126, 109 (1977) [π ̅ π ̅]; Hanlon, J., et al, Phys. Rev. Letters, 37, 967 (1976) [π^(+) π ̅]; Abramowicz, H., et al. Nucl. Phys., B166, 62 (1980) [π^(+) π ̅ ]. [7] M. R. Pennington, Annals Phys. 92, 164 (1975). A. D. Martin and M. R. Pennington, Annals Phys. 114, 1 (1978). [8] B.G. Zakharov and V.N. Sergeev, Sov. J. Nucl. Phys. 39, 448 (1984) also in Yad. Fiz. 39, 707 (1984).0217-751X10.1142/S0217751X05021981https://hdl.handle.net/20.500.14352/51730©World scientific publ co pte LTD. I thank the MESON2004 organizers for the stimulating workshop, since this note originated in the discussion following my talk. In particular, I thank A. Szczurek and N.N. Nikolaev for their comments on the data [8]. I also thank F.J. Ynduráin for comments and suggestions and as coauthor of the theoretical Regge description reviewed here. I am very grateful for the hospitality of the Institut für Kernphysik (Theorie), Forschungzentrum Jülich, where this note was prepared. Financial support from Spanish CICYT projects BFM2000-1326, BFM2002-01003, and from the E.U. EURIDICE network HPRN-CT-2002-00311 is also acknowledged.We have recently presented a Regge description of ππ total cross sections valid above 1.4 GeV, consistent with the few existing experiments, factorization and crossing symmetry. In this note we show how it also describes a further large data sample obtained from an analysis of experiments on π^(±)p → X∆^(++) and π^(±)n → Xp.engjournal articlehttp://dx.doi.org/10.1142/S0217751X05021981http://www.worldscientific.com/http://arxiv.org/abs/hep-ph/0407213open access51-73ScatteringFísica-Modelos matemáticosFísica matemática