Summary
In this study of hyperfragment production by K--meson absorptions at rest in emulsion nuclei, an attempt has been made to estimate the contribution of heavy spallation hyperfragments to the total observed number. In a sample of 24 640 K--meson captures, 1612 secondary events have been attributed to the production and subsequent decay of hyperfragments. From a study of the characteristics of both the production and decay disintegrations, it is concluded that about one half of the observed hyperfragments consists of λ0-hyperons trapped in the heavy spallation products of silver and bromine and these are almost entirely confined to the (0/3) μm range interval. The consequences of their presence aie discussed.
Riassunto
In questo studio della produzione di iperframmenti nell’assorbimento di mesoni K-in quiete nei nuclei dell’emulsione, si fa un tentativo di valutare il contributo dei frammenti pesanti di demolizione al numero totale osservato. In un campione di 24 640 catture di mesoni K-, 1612 eventi secondari sono stati attribuiti alla produzione e successivo decadimento degli ipeiframmenti. Da uno studio delle caratteristiche delle disintegrazioni sia di produzione che di decadimento, si conclude che circa la metà degli iperframmenti osservati consiste di iperoni Λ0 catturati nei prodotti pesanti di demolizione dell’argento e del bromo ed essi sono quasi interamente conflnati nel-Pintervallo di percorso (0/3) μm. Si discutono le conseguenze della loro presenza.
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Lemonne, J., Mayeur, C., Sacton, J. et al. The production of heavy hyperfragments by K--meson captures at rest in emulsion nuclei. Nuovo Cim 34, 529–541 (1964). https://doi.org/10.1007/BF02749996
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DOI: https://doi.org/10.1007/BF02749996