Summary
Using the method of Feynman and considering both the Λ and Σ-particles as intermediate states, the differential and total cross-sections for the scattering of scalar and pseudoscalar K+-mesons by nucleons have been calculated in the second order approximation of perturbation theory. As a result, the various values are given which may be assumed by the ratios:
as a function of the ratios=g 2Δ /g 2∑ of the interaction constants for the reactions N → K + Λ and N → K + Σ. These results are then discussed in relation to the few experimental data so far available.
Riassunto
Usando il metodo di Feynman e considerando sia la particella Λ che la particella Σ come possibili stati intermedi, sono state calcolate le sezioni d’urto differenziali e totali, nell’approssimazione del secondo ordine della teoria delle perturbazioni, per lo scattering di mesoni K scalari e pseudoscalari su nucleoni. Sono stati inoltre dati i vari valori che i rapporti:
possono assumere in funzione del rapportos=g 2Δ /g 2∑ fra le costanti di interazione riguardanti i processi elementari N → K + Λ e N → K + Σ. Alla fine sono stati discussi i risultati ottenuti dalla presente teoria in relazione ai pochi risultati sperimentali finora disponibili.
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Ceolin, C., Taffara, L. On the scattering of K+-mesons by nucleons in perturbation theory. Nuovo Cim 5, 435–447 (1957). https://doi.org/10.1007/BF02855250
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DOI: https://doi.org/10.1007/BF02855250