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Nonsimple physical-region singularities of theS-matrix
Il Nuovo Cimento A, 1967A certain class of nonsimple singularities is analysed byS-matrix methods. A nonsimple singularity is one whose Landau-Cutkosky diagram does not consist of a network of single lines. The positive-α condition and the Cutkosky formula are deduced, in agreement with perturbation theory.
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Phenomenological theory of theS matrix and T, C and P invariance (II)
Il Nuovo Cimento, 1958The paper contains some applications of the general phenomenological theory of the transition matrix which has been given in part I of this work. Besides a general discussion of various physical relations which follow from theT, C andTCP invariance requirements the examples of Kμ3 and hyperon decays are studied in some more detail.
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On the convergence of perturbation series: theS matrix of the non linear sigma model
Zeitschrift Für Physik C-Particles and Fields, 1989M Gomes
exaly
Possibility of a doubly-charged structure at theS-meson mass
Zeitschrift Für Physik C-Particles and Fields, 1980Saul Barshay, Barshay Saul
exaly
Tricho-hepatic-enteric syndrome (THES) without intractable diarrhoea
Gene, 2019Madhur Ravikumara
exaly

