TY  - JOUR
AU  - Fernández-Rañada, Antonio
PY  - 1967
DO  - 10.1007/BF02818417
SN  - 0369-3546
UR  - https://hdl.handle.net/20.500.14352/64926
T2  - Il Nuovo Cimento A Series 11
AB  - The requirements of causality and finite range lead to analytic expressions for theS-matrix in πN resonant waves. The singularities in the complex energy plane are obtained. From them it is easy to calculate the mass and width of the resonances. It is...
M2  - 486
PB  - Societe Italiana di Fisica
TI  - Causality and analyticity in πN resonant wavesresonant waves
TY  - journal article
VL  - 52
ER  -