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Il Nuovo Cimento (1955-1965)

, Volume 31, Issue 1, pp 56–74 | Cite as

Partial-wave analysis of the reaction: π+p→K00

  • M. Rimpault
Article

Summary

In the present paper we analyse in partial-wave amplitudes the reaction: π+p→K00. We first describe a method of calculation like the mean squares method which permits to obtain directly, up to a phase factor, a set of a partial-wave amplitudes from experimental data for angular distribution and polarization. In the second part, we determine the phase factor by assuming the existence of a resonantF5/2 state and we show the consistence of the assumption with the previous results. The peak of the total cross-section can then be explained by an important decay mode of the third π-nucleon resonance into the K0Λ0 state. We give also some values for the baryon-meson coupling constants: {fx56-1}.

Riassunto

Nel presente articolo si analizza, in ampiezze d’onde parziali la reazione π+p→→K00. Dapprima si descrive un metodo di calcolo simile a quello dei minimi quadrati che permette di ottenere direttamente, a meno di un fattore di fase, un gruppo di ampiezze d’onde parziali dai dati sperimentali sulla distribuzione angolare e la polarizzazione. Nella seconda parte si determina il fattore di fase, supponendo che esista uno stato risonanteF5/2 e si mostra la concordanza fra questa ipotesi ed i risultati ottenuti precedentemente. Si può poi spiegare il picco della sezione d’urto totale con un importante modo di decadimento della terza risonanza π-nucleone nello stato K0Λ0. Si dànno anche alcuni valori delle costanti d’accoppiamento barione-mesone {fx74-1}.

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Copyright information

© Nicola Zanichelli Editore 1964

Authors and Affiliations

  • M. Rimpault
    • 1
    • 2
  1. 1.Faculté des SciencesBordeaux
  2. 2.Laboratoire de Physique ThéoriqueTalence, Gironde

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