The interaction and decay of K- mesons in photographic emulsion - Part I. General characteristics of K--Interactions and analysis of events in which a charged π-meson is emitted

B. Bhowmik*, D. Evans, D. Falla, F. Hassan, A. A. Kamal, K. K. Nagpaul, D. J. Prowse, M. René, G. Alexander, R. H.W. Johnston, C. O'Ceallaigh, D. Keefe, E. H.S. Burhop, D. H. Davis, R. C. Kumar, W. B. Lasich, M. A. Shaukat, F. R. Stannard, G. Bacchella, A. BonettiC. Dilworth, G. Occhialini, L. Scarsi, M. Grilli, L. Guerriero, L. von Lindern, M. Merlin, A. Salandin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A total of 3 480 K--mesons has been observed. Of these 445 interact in flight, at a mean energy of 40 MeV and only their general characteristics have been studied. Little difference has been observed between the number of unstable charged particles (Σ±-hypersons and π±-mesons) in these interactions and those in the 3 035 interactions at rest. The 3 035 K--interactions at rest have been studied in detail. In this paper (Part I) are given the results on those interactions in which π-mesons are emitted. An estimate of the Σ-hyperon nuclear potential is based on the energy spectrum of π-mesons emitted in the K--interactions in which the only charged particles emitted are a π-meson and a Σ-hyperon. A detailed examination of the angular distribution of 2-pronged events, and of the sign ratio of the π-mesons, the prong distribution and energy release in all events has led to an estimate of the probabilities of absorption of positive and negative Σ-hyperons in the parent nucleus, and to a partition of the events between the various primary reactions.

Original languageEnglish
Pages (from-to)690-729
Number of pages40
JournalLa Rivista del Nuovo Cimento
Volume13
Issue number4
DOIs
StatePublished - Aug 1959
Externally publishedYes

Fingerprint

Dive into the research topics of 'The interaction and decay of K- mesons in photographic emulsion - Part I. General characteristics of K--Interactions and analysis of events in which a charged π-meson is emitted'. Together they form a unique fingerprint.

Cite this