RT Journal Article T1 On the S-matrix of highly absorptive resonant waves: the πN S_(31) wave A1 Fernández-Rañada, Antonio AB It is shown that theS-matrix of a highly absorptive resonant wave is dominated by a factor called outer factor. As an application an analytic expression for πN S-matrix in S_(31) wave is found. PB Societe Italiana di Fisica SN 0369-3546 YR 1968 FD 1968-03-01 LK https://hdl.handle.net/20.500.14352/64924 UL https://hdl.handle.net/20.500.14352/64924 DS Docta Complutense RD 20 dic 2025