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A theory of hyperfragments

III.NΛ−NΣ exchange forces and π+-mesic decayexchange forces and π+-mesic decay

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Il Nuovo Cimento Series 10

Summary

The redetermination of theN-Λ interaction parameters is done by making use of the recent experimental information on the Λ binding energies forp-shell hyperfragments. The comparison of the parameters thus obtained with those by Dalitz and Downs favours the anti-parallel spin for thep-shell hyperfragments. The study of the exchange forces gives information on the probability of the Σ+-bound state. The probability amplitude obtained in this way is compared with the observed π+-mesic decay probability.

Riassunto

Servendosi dei recenti dati sperimentali sulle energie di legame del Λ per iperframmenti di stratop, si fa la rideterminazione dei parametri d’interazioneN-Λ. Il confronto fra i parametri così ottenuti e quelli dati da Dalitz e Downs è in favore di uno spin antiparallelo per gli iperframmenti di stratop. Lo studio delle forze di scambio dà informazioni sulla probabilità dello stato legato Σ+. Si confronta l’ampiezza di probabilità, così ottenuta, con la probabilità dei decadimenti mesici π+ osservati.

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Supported in part by the National Science Foundation and the Air Force Office of Scientific Research.

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Iwao, S. A theory of hyperfragments. Nuovo Cim 25, 890–900 (1962). https://doi.org/10.1007/BF02733155

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  • DOI: https://doi.org/10.1007/BF02733155

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